Next week, all four of the CW's DC superhero shows will join together for a team-up unlike any other. The week will also include "Arrow's" landmark episode, an installment titled "Invasion!" The episode will air on November 30 as the penultimate chapter of the CW's upcoming 4-part crossover event.

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The first photos from the episode depict what could have become of Oliver Queen's (Stephen Amell) life had he never boarded the Queen's Gambit and gotten shipwrecked all those years ago. His parents are alive and he's about to marry Laurel Lance (Katie Cassidy). "Legends of Tomorrow's" Caity Lotz also appears in this parallel reality, helping her sister Laurel prepare for her big day. But that's not the only storyline in the landmark episode; team Arrow will join with guest stars Grant Gustin (the Flash) and Melissa Benoist (Supergirl) to take on a major threat.

Arrow -- Invasion! -- Pictured (L-R): Caity Lotz as Sara Lance/White Canary, Stephen Amell as Oliver Queen and David Ramsey as John Diggle -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Caity Lotz as Sara Lance/White Canary, Stephen Amell as Oliver Queen and David Ramsey as John Diggle -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured: Caity Lotz as Sara Lance/White Canary -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured: Caity Lotz as Sara Lance/White Canary -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Katie Cassidy as Laurel Lance and Jamey Sheridan as Robert Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Katie Cassidy as Laurel Lance and Jamey Sheridan as Robert Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Stephen Amell as Oliver Queen and Katie Cassidy as Laurel Lance -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Stephen Amell as Oliver Queen and Katie Cassidy as Laurel Lance -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Brandon Routh as Ray Palmer, David Ramsey as John Diggle, Stephen Amell as Oliver Queen, and Caity Lotz as Sara Lance -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Brandon Routh as Ray Palmer, David Ramsey as John Diggle, Stephen Amell as Oliver Queen, and Caity Lotz as Sara Lance -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured: Stephen Amell as Oliver Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured: Stephen Amell as Oliver Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Stephen Amell as Oliver Queen and Katie Cassidy as Laurel Lance -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Stephen Amell as Oliver Queen and Katie Cassidy as Laurel Lance -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Stephen Amell as Oliver Queen, Caity Lotz as Sara Lance, Brandon Routh as Ray Palmer, David Ramsey as John Diggle and Willa Holland as Thea Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Stephen Amell as Oliver Queen, Caity Lotz as Sara Lance, Brandon Routh as Ray Palmer, David Ramsey as John Diggle and Willa Holland as Thea Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured: Katie Cassidy as Laurel Lance -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured: Katie Cassidy as Laurel Lance -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Katie Cassidy as Laurel Lance and Caity Lotz as Sara Lance/White Canary -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Katie Cassidy as Laurel Lance and Caity Lotz as Sara Lance/White Canary -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Katie Cassidy as Laurel Lance, Stephen Amell as Oliver Queen, and David Ramsey as John Diggle -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Katie Cassidy as Laurel Lance, Stephen Amell as Oliver Queen, and David Ramsey as John Diggle -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Willa Holland as Thea Queen and Susanna Thompson as Moira Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Willa Holland as Thea Queen and Susanna Thompson as Moira Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Willa Holland as Thea Queen and Susanna Thompson as Moira Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Willa Holland as Thea Queen and Susanna Thompson as Moira Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Willa Holland as Thea Queen and Susanna Thompson as Moira Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Willa Holland as Thea Queen and Susanna Thompson as Moira Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Jamey Sheridan as Robert Queen and Susanna Thompson as Moira Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Jamey Sheridan as Robert Queen and Susanna Thompson as Moira Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Willa Holland as Thea Queen and Stephen Amell as Oliver Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Willa Holland as Thea Queen and Stephen Amell as Oliver Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Willa Holland as Thea Queen and Stephen Amell as Oliver Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Willa Holland as Thea Queen and Stephen Amell as Oliver Queen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Caity Lotz as Sara Lance and Katie Cassidy as Laurel Lance -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Caity Lotz as Sara Lance and Katie Cassidy as Laurel Lance -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- Invasion! -- Pictured (L-R): Brandon Routh as Ray Palmer and Emily Bett Rickards as Felicity Smoak -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.
Arrow -- "Invasion!" -- Pictured (L-R): Brandon Routh as Ray Palmer and Emily Bett Rickards as Felicity Smoak -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All Rights Reserved.

ARROW CELEBRATES 100 EPISODES; THE EPIC SUPERHERO CROSSOVER CONTINUES — Oliver (Stephen Amell) wakes up to a life where he never got on The Queen’s Gambit. Robert (guest star Jamey Sheridan) and Moira Queen (guest star Susanna Thompson) are alive and well. Laurel (guest star Katie Cassidy) is his loving fiancée and their wedding is imminent. Everything seems perfect, but Oliver starts to notice small imperfections that make him question this new reality. Meanwhile, Felicity (Emily Bett Rickards) and the recruits take on a new threat with help from The Flash (guest star Grant Gustin) and Supergirl (guest star Melissa Benoist).

James Bamford directed the episode with story by Greg Berlanti and written by Marc Guggenheim & Wendy Mericle.

Starring Stephen Amell as the Emerald Archer, "Arrow" airs Wednesdays at 8 pm ET/PT on The CW. The series also stars Emily Bett Rickards, David Ramsey, John Barrowman, Willa Holland and more.