The inciting incident is, of course, the realization that the entire crew has been taking medication called “The Blue” all of their lives to suppress their human desires. Once they catch on to the secret, the ship runs rampant (and all hormonal) which divides them into two groups. One lead by Fionn Whitehead’s Zac, who wants to stop taking The Blue and forgo the mission all together and the other by Tye Sheridan and Lily-Rose Depp’s Christopher and Sela, who accept their mission to procreate for future generations.