The protagonist (Han Yun) broke up with her boyfriend (Jamel Xiao) on her birthday. Because she was broken up, she went to the amusement park to ride the roller coaster. She played it once, twice, and three times. Suddenly, she heard a "bang" sound, and the roller coaster that was about to slide broke down in the middle and stopped at a height of 50 meters. After a while, the consistent figure of "Plop" crossed the roller coaster...