Unbeknown to the other couple, Elyot & Sibyl Chase, and Victor & Amanda Prynne are both honeymooning at the same French coastal resort hotel at the same time, staying in adjacent suites 359 and 357 with connecting terraces. Not that Sibyl has ever met the Prynnes, or Victor the Chases, but Amanda and Elyot have met before as Amanda was the first Mrs. Elyot Chase. The two got divorced a year earlier due primarily to supposed infidelity on both sides. When Elyot and Amanda see each other for the first time at the resort, they are initially mortified, but quickly come to the realization that they are still in love with each other. They decide to ditch their respective second spouses and run off together to a Swiss chalet, a homage to their first honeymoon. The questions become will Victor and/or Sibyl care and run after their respective spouse, and/or will the problems in Elyot and Amanda's marriage resurface despite each vowing that the year apart has matured their relationship?