Mu Xiaoyu was adopted by his grandfather when he was 12 years old. After spending several years together day and night, I unknowingly fell in love with my grandfather's grandson... The illegitimate son of the Gao family who lived in my grandfather's house in the same year as me. She desperately suppressed her love and pretended to smile all day long to watch him play happily with his childhood sweetheart! He thought he would have no chance to be with him in this life... Until an accident happened, and he learned a secret about Sun Xiaohai's life experience... And this secret would always threaten A Hai's safety. First, grandpa died unexpectedly, and then Xin'er suffered an accident. And he was regarded as a murderer? What is he going to do? How will their fate be reversed?