Two couples move into a flat and after just one week, one-half of each couple dies. Now Ava and Freddie must live out their tenancy and grief, together. Ava and Stefan have been together for (too many?) years " steady, standard, static. Billie and Freddie on the other hand are still shagging. Ava and Billie have been best frenemies forever, one another's ride or die until Billie actually does, along with Stefan.