Amy and Flynn have been dating for two years. And they love each other. Don’t they? Only Amy can’t read Flynn’s mind and Flynn can’t read Amy’s. Little do they know this weekend is make or break.

Amy’s nervous older sister is getting married at the world’s swankiest wedding venue in rural Devon and is relying on her younger sister to be the perfect Chief Bridesmaid. Frustrations on the way to the wedding escalate until both Amy and Flynn are shouting at each other in a country lane during a thunderstorm. Why can’t they see things from the other’s point of view?

When lightning strikes, Flynn and Amy are thrown to the ground, and when they stand back up they realize—they’ve switched bodies. Forced to attend the glamorous wedding weekend as each other is surely an impossible task. With spa mornings, exes, flash mob rehearsals, speeches and more, getting through this hilarious body swap will test their relationship to breaking point.

And when they each discover big secrets in the other’s past—it seems that switching bodies could be the least of their problems. Even if they do manage to swap back—can their relationship survive?