The CW has released the official plot synopsis for "Legends of Tomorrow's" April 7 episode, titled "Progeny."

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In the installment -- written by Phil Klemmer & Marc Guggenheim -- Rip Hunter must decide if it's worth eliminating a 14-year-old boy, who will one day turn out to be Vandal Savage's ally.

DC'S Legends of Tomorrow

"Progeny" - (8:00-9:00 p.m. ET) (TV-14, LV) (HDTV)

RIP CROSSES THE LINE IN HIS EFFORT TO SAVE HIS FAMILY - Rip (Arthur Darvill) tells the team they are headed to the future to take out a powerful ally that Savage (guest star Casper Crump) needs in order to conquer the world.  However, when Rip reveals the ally is a 14 year-old boy (guest star Cory Gruter-Andrew) who will one day grow into an evil dictator, the team is split about the morality of killing a child, even if it does save the world.  Meanwhile, Sara (Caity Lotz) talks Snart (Wentworth Miller) through a rough patch and Ray (Brandon Routh) learns something that could impact his future with Kendra (Ciara Renee).  David Geddes directed the episode written by Phil Klemmer and Marc Guggenheim (#110). Original airdate 4/7/2016.

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"Legends of Tomorrow" airs Thursdays at 8/7c on The CW.