Ken, Knot, and Nate team up with Jeng, the leader of Dragon Fang, to ambush Shin as revenge for the death of his brother, Jom. As they mistake Shin for Tsunami, the real Tsunami comes to the rescue.

Things in Siamwit School get worse when rumors that Shin killed someone and was dealing with a mafia gang reached the parents' association, putting him at risk of being expelled from school.