Igniting Love at Graduation

In 2017, Class 404 was getting ready to take a graduation photo. Just as their homeroom teacher, Dihua, and class monitor, Ai Ai, were about to use their phones to take the picture, a ghost unexpectedly possessed one of the students. Their investigation revealed that the ghost, Zhui Yu, had spotted the class taking their graduation photo in black clothes and holding blood-red phones, then possessed one of them. After everything was finally revealed, the students, their homeroom teacher Dihua, and class monitor Ai Ai took their graduation photo.