Cheng Yu, who had just received his master's degree in psychology, came to Nanyian Middle School to work as a psychotherapist. There he met Lyn, a schoolgirl who lives in the shadow of her father, a psychology professor who always demands that she do everything perfectly. Lin was very depressed and sent a distress signal to Cheng Yu in a special way. He helps Lin deal with all the problems. Now Lin is his assistant. Since then, they have encountered many strange and exciting events, behind which there are students in need of help and souls awaiting redemption...