The narrative opens with Therese Belivet, a nineteen-year-old aspiring stage designer working as a temporary clerk in a Manhattan department store, living a life of quiet alienation and drifting through a lackluster relationship with a young man named Richard. Her routine is abruptly shattered when she encounters Carol Aird, an elegant, older woman going through a bitter divorce and custody battle over her young daughter, Rindy. A spontaneous Christmas card sent by Therese leads to a luncheon invitation, initiating an intense and unspoken connection that quickly deepens.
As Therese and Carol spend more time together, they navigate the rigid social constraints of the early 1950s. Carol invites Therese to her suburban New Jersey home, an encounter interrupted by Carol's antagonistic estranged husband, Harge, who is fiercely determined to use Carol's affection for women against her in the custody proceedings. Meanwhile, Therese secures a real apprenticeship in the theater through a casual acquaintance, but her growing obsession with Carol eclipses her ambitions, leading her to pull away from Richard and her everyday life.
Driven by a mutual need for escape and a desire to understand the depth of their growing attachment, Carol impulsively invites Therese to leave New York for an extended road trip across the American West. Leaving their respective pressures behind, they journey through snowy highways toward Chicago and beyond, crossing vast landscapes that mirror the shifting boundaries of their relationship. During this time, the nature of their bond evolves from a quiet infatuation into a profound, undeniable romance, though it is continually shadowed by the realities they are fleeing.
The tension peaks as Harge hires a private investigator to track their movements, gathering evidence to strip Carol of her parental rights. Confronted with the impending custody hearing and the painful ultimatum set by her husband, Carol faces the agonizing choice between her daughter and her newfound freedom with Therese. The argument forces a temporary and devastating separation between the two women at a remote motel, leaving Therese stranded and forced to confront the fragility of their future.
In the aftermath of the separation, Therese returns to New York, older, more self-possessed, and fully committed to her artistic career in the theater. She realizes that her old life with Richard is permanently behind her and that she has been irrevocably changed by the experience. The novel concludes with a tentative, powerful convergence where Carol, having made her difficult choices, reaches out once more, setting the stage for a reunion built on mutual honesty and hard-won resilience.
