At the celebration of the tenth anniversary of the marriage of Bai Li and her husband Ye Yunkai, Su Yu, a junior student who has had a crush on Bai Li for many years, appeared on stage with his fiancée Ning Mochen.Su Yu sent blessings to her senior Bai Li, but Ning Mochen secretly winked at Ye Yunkai, seduced Ye Yunkai into secretly having an affair, and even deliberately led Bai Li to come over and witness her husband cheating on her.After enduring great pain, Bai Li decided to endure it and proceed with the tenth anniversary ceremony as usual.However, Ning Mochen lit a fire in the corner of the venue, causing the celebration to end in an awkward manner.Bai Li hid in the bow of the boat and cried secretly, but Ning Mochen danced happily by the lake.However, an accident caused the two of them to fall into the water and fall into coma.After waking up in the hospital, Bai Li found that his consciousness had traveled into Ning Mochen's body and became the mistress he hated most.