Jenny’s marriage with Mark ends when he openly flirts with another woman, Gemma, during dinner. Jenny’s shocked when Gemma reveals Mark is seeing her too. Determined to confront him, Jenny devises a plan.

After Mark falls asleep, Jenny checks his phone, finding flirty messages with Gemma. Jenny impersonates Mark, setting up a date with Gemma to expose him. Jenny also invites Mark’s family to the restaurant for a promotion celebration.

At the restaurant, Jenny confronts Gemma, revealing Mark’s deceit to everyone. Mark’s family is shocked, and the restaurant manager intervenes. Mark arrives with another woman, adding to Jenny’s humiliation.

Jenny refuses to discuss things privately, realizing she’s done with the marriage. She drives home, deciding to ensure Mark gets nothing in the divorce.

In the end, Jenny reflects on her actions, feeling a mix of foolishness and liberation, but resolved to move forward without Mark.