The rules are simple. Choose the most significant moments from your relationship - one for each hour in the day.

You'd probably pick when you first met, right?
And the instant you knew for sure it was love?
Maybe even the time you watched the sunrise after your first night together?

But what about the car journey to the holiday where everything started to go wrong? Or your first proper fight?

Or that time you lied about where you'd been?

It's a once in a lifetime chance to learn the truth.

But if you had to be completely honest with the one you love, would you still play?

For Esme and Tom, the game is about to begin. And once they start, there's no going back . . .