DC's Legends of Tomorrow - Season 1 - Eps 10: Progeny
Rip tells the team they are headed to the future to take out a powerful ally that Savage needs in order to conquer the world. However, when Rip reveals the ally is a 14 year-old boy 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 talks Snart through a rough patch and Ray learns something that could impact his future with Kendra.
About DC's Legends of Tomorrow

Title: DC's Legends of Tomorrow
First Air Date: 2016-01-21
Last Air Date: 2022-03-02
Status: Canceled
Rating: 7.3/10 (from 2331 votes)
Language: EN
Seasons: 8
Total Episodes: 110
Network: The CW
Genres: Action & Adventure, Sci-Fi & Fantasy, Drama
Production Companies: Warner Bros. Television, Bonanza Productions, Berlanti Productions, DC Entertainment
Synopsis
When heroes alone are not enough ... the world needs legends. Having seen the future, one he will desperately try to prevent from happening, time-traveling rogue Rip Hunter is tasked with assembling a disparate group of both heroes and villains to confront an unstoppable threat — one in which not only is the planet at stake, but all of time itself. Can this ragtag team defeat an immortal threat unlike anything they have ever known?
Cast

Caity Lotz
Sara Lance / White Canary

Tala Ashe
Zari Tarazi

Jes Macallan
Ava Sharpe

Olivia Swann
Astra Logue

Adam Tsekhman
Gary Green

Nick Zano
Nathaniel 'Nate' Heywood / Steel

Shayan Sobhian
Behrad Tarazi

Lisseth Chavez
Esperanza 'Spooner' Cruz

Amy Pemberton
Gideon / Evil Gideon

Matt Ryan
Dr. Gwyn Davies