Ellen secretly loves her boss Douglas. Her roommate Chris pretends to pursue Douglas in Sun Valley to get him to call Ellen, posing as his fake fiancee. Chris attracts band leader Dick, forming a love triangle.
Ellen Hallet is in love with her playboy boss, Douglas Morrison, but too timid to do anything about it. Her roommate Chris devises a plan to help her: she follows Morrison on his trip to Sun Valley, Idaho and plays the overattentive female, hoping he'll send for Ellen, who often plays his "fiancée" when he has a female he can't discourage otherwise. Complications arise when Chris catches the eye of band leader Dick Layn and lands in a triangle with the two men.