Sara Pascoe explores the concept of monogamy in this funny and insightful film. Through Sara's world, created through live action and animation, we discover what makes us tick when it comes to matters of the heart and how you should never underestimate the allure of a saxophone.

Ronnie's party is going well, but his mother Alice is waiting for her husband Tom to return from the office to help supervise. The doorbell rings, but instead of Tom it's Simon Potter, a strange little boy who Ronnie dislikes, and who knows some unusual and horrifying variations of children's party games.