Children's librarian Daphne has just been broken up with by her fiancé Peter, who quickly moved on to his childhood best friend, Petra. Forced out of their living situation, Daphne takes up residence with Miles, Peta's ex-boyfriend. The pair hatch a fake dating scheme to make their exes jealous at the wedding, but as with the popular trope, the pair's shared desire for revenge could spark a whole new flame.