Your heart will become connected when you fall in love, literally. By being connected, you'll be able to feel your lovers hearbeat no matter where you are. It happened that way for your parents, your friends, but for you your heart becomes connected with the person you least expect it to be after an accident: Park Chanyeol.

In which Byun Baekhyun is one of the best con artists in Seoul, targeting the rich and corrupt. Full of ideas and wit, his seniors call him a young mastermind. As if his life can't get any more hectic, he encounters a drunk woman about his age and in a span of one day, they are living under the same roof. Though this woman turns out to be not as normal as she seems, Baekhyun is already falling for her.

In which Kyungsoo suddenly switches bodies with his annoying, rebellious seatmate in his Science and Mysteries club, and well... matters start to get a little disastrous.    ~ Do Kyungsoo ~

Park Chanyeol is a rebellious Sungkyunkwan scholar whose hopes of having a love life are crushed. Gu Yeonwoo, an aspiring author, just so happens to be longing for a romance of her own.    

Do Kyungsoo's miserable life takes a 180 degree change when two strange men show up on his doorstep, and he receives an order : He's going to create the most notorious gang ever. But will falling in love change everything?