Progeny (DC's Legends of Tomorrow)

Synopsis
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.