Lewis makes a shocking discovery about his ancestry that turns his world upseide-down and makes him question his life choices.

Lewis learns from Lilyhot that his alien father Antoine is in prison. Border guard Truss turns a suspicious eye on Lewis.

Lilyhot tries to get Antoine to start a gang war with Fabien, but Antoine wants a peaceful life with no drama.

When Truss follows Lewis into Troy, he finds out that Lewis is half-alien, and he also finds himself being hunted by the Alien League.

When Dominic manages to stop a hit on the human side of the wall, he is forced to get rid of small-time drug dealer Sean.

A lockdown is put into place when a lot of Troy's residents try to leave the gang war. Lewis realises he is the key to stopping the conflict but must make a sacrifice to do so.