Forced to live "off the land" on Earth Day, tension within the group erupts as treatment intensifies and hunger pains set in.

As the guests learn more about Tranquillum's unique protocols, everyone must decide if they will continue under Masha's care. Meanwhile, Masha is receiving mysterious threats of her own.

Zoe's birthday celebration reopens old wounds, even as the group begins to grow closer.

As the protocol escalates, relationships are strengthened, even as the effects of the treatment become more unsettling. Masha reveals her unique treatment goals for the Marconi family.