Inspired by writer, director, and star Aml Ameen's life, Boxing Day follows Melvin (Ameen), a British author living in America, who returns home to London for Christmas to introduce his American fiancée, Lisa (King), to his eccentric British-Caribbean family. Their relationship is put to the test as she discovers the world her fiancée has left behind.

A trio of con-artists rip off some gangsters and lie low in a rented house. Christy tries to see the sting through whilst an unwanted guest, Phil, soon has Nick under his spell and Chloe firmly in his sights.