Upon the announcement of another UK national lockdown, Flo and Rob find themselves stuck in their house in London. Meanwhile, Flo tries to maintain a brand-new relationship with Evelyn, who had to abruptly leave to her hometown in Mexico.

Clara and Sam try to record a "call to action" video to raise awareness for their friend Emily who has gone missing. However, things are not as they seem and Clara and Sam might not be as innocent as they say they are.