In the episode, Rip takes the team to London, 2166 -- three months before his family is killed -- where he believes it's his last chance to take out Savage. To do so, the team must seek out Savage's daughter and figure out how to finally kill him.
Check out the synopsis for "Leviathan" below:
DC'S Legends of Tomorrow "Leviathan" - (8:00-9:00 p.m. ET) (TV-PG, LV) (HDTV)â€‚â€‚LONDON 2166 - Rip (Arthur Darvill) takes the team to London in the year 2166, three months before his family is killed.â€‚â€‚He believes this to be their final opportunity to take out Savage (Casper Crump) who is, unfortunately, at the height of his power.â€‚â€‚However, the team discovers two key elements to defeating him - Savage's daughter (guest star Jessica Sipos) and the means to kill Savage once and for all.â€‚â€‚Gregory Smith directed the episode written by Sarah Nicole Jones & Ray Utarnachitt (#113). Original airdate 4/28/2016.
"Legends of Tomorrow" airs Thursdays at 8/7c on The CW.