After Colin Walcott drops dead at his birthday party his wife Tess and daughter Cat discover he had a long-term mistress Marilyn by whom he has a daughter Cathy. Furious, Tess throws out Colin’s belongings while Cat is angry with boyfriend Marcus over a text he sent to another girl. When the two half-sisters, meet there is an argument over where to scatter their father’s ashes, leading to police intervention; they also learn that he might have been having an affair with yet another woman.