When Mattie (Lucy Carless) reveals that the Synths are planning to break into the Silo, Laura (Katherine Parkinson) is determined to find Niska (Emily Berrington) and ask for her help. Mattie asks Max (Ivanno Jeremiah) to help save Leo (Colin Morgan) from Hester's (Sonya Cassidy) influence.
Toby (Theo Stevenson) receives a disturbing message from Renie (Letitia Wright). Karen (Ruth Bradley) seeks out Athena's (Carrie-Anne Moss) expertise and makes a life-altering decision. Mia (Gemma Chan) and Hester break into the Silo, but things don't go according to plan.
