The fourth episode of Titans' second season is looking to take things back to the past with the original team together in action.

Titled "Aqualad," the upcoming episode offers a glimpse at the past, with DC Universe unveiling official stills of the team, including the eponymous, underwater hero suited up and facing an unknown threat. With a tragic fate for Aqualad hinted at by Dick Grayson and Donna Troy, the title and premise of the episode allude to it taking place primarily in the unseen past for the original roster, likely showing what happened to their friend and teammate, as well as why they initially disbanded.

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The photos reveal a tender moment between guest-star Drew Van Acker's Aqualad and Donna, while a more ominous photo shows Wonder Girl taking cover as Aqualad faces off against an off-screen danger alone. Other photos show Robin, Hawk and Dove together in-costume, with the latter fighting a soldier.

With Slade Wilson suiting back up as Deathstroke in the Season 2 premiere after learning the Titans had reformed, the masked villain likely has a role to play in the team's past. Whether Aqualad is facing the no-nonsense mercenary remains to be seen.

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Streaming now on DC Universe, Titans Season 2 stars Brenton Thwaites as Dick Grayson, Anna Diop as Kory Anders, Teagan Croft as Rachel Roth, Ryan Potter as Garfield Logan, Curran Walters as Jason Todd and Conor Leslie as Donna Troy, with Minka Kelly as Dawn Granger, Alan Ritchson as Hank Hall, Joshua Orpin as Superboy, Chelsea Zhang as Rose Wilson, Chella Man as Jericho, Drew Van Acker as Aqualad, Esai Morales as Deathstroke and Iain Glen as Bruce Wayne. Titans is executive produced by Johns, Goldsman, Berlanti and Sarah Schechter (Arrow, DC’s Legends of Tomorrow, The Flash, Supergirl). The show's second season is now available for streaming, with new episodes released every Friday.