Paula McFadden, a former Broadway dancer, faces an abrupt upheaval in her New York City life when her live-in boyfriend abandons her and sublets their apartment to another actor without informing her. Left alone to care for her precocious young daughter, Lucy, Paula's situation becomes even more complicated when the new tenant, Elliot Garfield, shows up at the door expecting to move in. Reluctantly, they agree to share the cramped apartment. Tensions rise as Paula's distrust for men and Elliot's laid-back attitude about life clash fiercely.

As days go by, Elliot develops a close bond with Lucy, who finds his quirky personality endearing, warming up to him faster than her cautious mother. Meanwhile, Elliot faces his own struggles preparing for a tough acting job that he hopes will boost his career. Through a series of heartfelt and humorous interactions, Paula battles with her guarded nature while trying to navigate her fledgling romantic feelings for Elliot. Though their relationship is frequently tested by personal insecurities and the unpredictable nature of show business, the unexpected trio begins to find comfort and companionship in their unconventional living arrangement.