Experiment Three Middle School is a private school where students from all over the country study. During the summer vacation, a group of underachieving students are arranged to take remedial classes, but no one is willing to serve as a substitute teacher. Under the leadership of the "copycat" training director, people from all walks of life with secrets are recruited to become their substitute teachers, which is why they are acting strangely
Experiment Three Middle School is a private school where students from all over the country study. During the summer vacation, a group of underachieving students are arranged to take remedial classes, but no one is willing to serve as a substitute teacher. Under the leadership of the "copycat" training director, people from all walks of life with secrets are recruited to become their substitute teachers, which is why they are acting strangely