Young flatmates Chrissy and Jo find a stranger, student chef Robin Tripp, asleep in their bath the morning after the farewell party for their departed flatmate Eleanor. Learning that he is staying at the YMCA and is looking for a place, they easily convince him to move in, making it clear, however, that their relationship will be purely platonic. When landlord George Roper objects to the mixed-sex living arrangement, Chrissy tells him that Robin is gay.