Marnie hits another dead end when she goes to a sex addicts meeting, but it still doesn't explain what's wrong with her. Things start to look up when she finds an unexpected kindred spirit in recovering porn addict Charlie, and gets closer to Amber and Joe after she talks herself into a job opportunity at Ethel magazine.

Marnie is at the end of her rope, so she jumps on a bus to London on a mission to change her life and figure out what is wrong with her. Loose and alone in the big city, she tumbles into the lives of eccentric Shereen, sardonic Amber and charismatic Joe.