Through Jae-gu, he meets an attractive, rebellious girl named Su-hee, who turns out to be Jong-suk's girlfriend, leader of a gang called TNT.

When Jae-gu is killed in a car accident related to a gang fight with Jong-suk, the Tigers decide to avenge him.

[1] Gangster High opened in South Korea in October, 2006, and premiered at the European Film Market in Germany on February 8, 2007.

In the United States, Derek Elley of Variety described it as bleak and violent, but praised it as "well drawn in all its diversity (and with occasional humor) by a good cast.

"[2] James Mudge of Beyond Hollywood gave it a positive review: "Although its premise may sound overly familiar, Gangster High certainly stands as one of the best teen violence films of recent years, with Park proving that he has not lost his touch when it comes to dealing with tales of troubled youth.