Sky Ames (Lew Ayres) is set to spend the rest of his life with Linda (Greer Garson) -- until she falls for his best friend, Jeff (Robert Taylor). Sky takes their marriage well, but Jeff soon has problems of his own. When his zeal for work causes him to miss his honeymoon, it results in a speedy divorce for the newlyweds. In order to bring the pair back together, kindhearted Sky gives Linda and Jeff a memory-loss potion. Now that they've forgotten each other, will they fall in love again?