Billie's short visit to the lake is ruined when Justin and Riley's spontaneous wedding goes awry as Maisy reckons with life-changing news about an old enemy: her mother, Mimsy.

命运能使好朋友反目成仇。一人认为对方害得自己的母亲离世，另一人则认为对方与自己的爱人私会，于是他们从此敌对。重逢的那天，两人拥有平等的身份地位，并因事业与爱情而竞争。