Contemporary Moscow. While riding her bicycle one day, Alyona, a shy librarian, accidentally collides with Liza, a dazzling blonde. When she wakes up in the hospital, she discovers that she and Liza have exchanged bodies.

迈克尔（安迪•加西亚饰）与爱莉丝（梅格•瑞恩饰）有宽敞的寓所，可爱的孩子，生活中应该是充满了幸福的味道可是爱莉丝酗酒的陋习成为了幸福的隐患，喝醉时她会对女儿大打出手。她明白自己的问题所在并极力想改正，