Do Kyungsoo thinks that Karma (for the stupid bet they did a long time ago) is finally on its toll when he becomes an instant wedding organizer, he is called 'boy' by a girl about ten years younger than him, and his coffee is accidentally spilled on his shirt.

And just when he thought it's probably all, his heart shatters when his ex-boyfriend enters, asking him to organize his wedding.

Is this the payback for what he had done five years ago or is it time to let these feelings go?