As Apollon surrounds the base, Simone scrambles to find a cure. Rasmus's secret draws Sarah to him -- but threatens to tear the group apart.

Simone, Martin and Fie pursue Rasmus and Sarah, whose bond deepens while they're on the run. Patrick makes another discovery. Jean tries to console Lea.

As Rasmus grows weaker, a worried Sarah asks Fie for help. Reunited, Martin and Simone begin the long trek back to Apollon.

A surprising revelation sparks new hope — but Simone and the others must ready themselves for a dangerous confrontation as Rasmus closes in.