Rigsby returns from his holidays to find that Ruth has returned and that an infant is being passed around for care.

When Alan and Ruth are cast as lovers in a play written by a new tenant, Hilary, a jealous Rigsby decides to take up acting.

Even the callous Rigsby becomes concerned over a depressed new tenant who has suffered a series of business and personal problems.

Ruth becomes indignant with Marilyn, the new tenant, who is an exotic dancer with an unusual prop in her act.

Alan becomes engaged to a girl from a snobbish family.

Rigsby jumps to a drastic conclusion when a hypochondriac tenant is taken to the hospital.