18-Year-old Chang Yu and 20-year-old Tianyao met at a masquerade party and they quickly became friends. Among the people attending the dance the next day, a young woman died, and there was a blood-red word "reincarnation" on the wall. The prom master said it was a curse. The two were exploring the truth and sharing the same hardships, until one day, he found that he fell in love with him...