In a world where people have soulmarks that match two people together as fate to spend their rest of their lives together as lovers. People who find their matching soulmark partner are lucky but now all soulmarks have to match for you to fall in love with someone it doesn't mean if you have the same soulmark you will last forever but what happens when Kim Junmyeon a.k.a Suho a loved and adored  college music teacher finds the person with the same soulmark as his but it's someone who would least expect....