Mo Ran walked into the grocery store, for the last 3 years he’s been kind of a mess.

3 years ago Mo Ran was horrible to his former boyfriend and university instructor, Chu Wanning, and they broke it up. Mo Ran had been beating himself up wondering why he did that to such a perfect person. He sees Chu Wanning in the store and freezes, but realizes that he was with a former classmate of his, Shi Mei. Mo Ran didn’t know how to react, till he saw a shock collar on Chu Wanning’s neck.