Pimsatjee Chaiyasaj

Win, takes a lethal gamble to fund his mother's medical treatment when Itt, an old friend, lures him into the Arena. In this brutal underground circuit, fighters are marked with "God Skin" tattoos to gain a ruthless edge.

A group of students who have gone to visit a carnival at night on a weekend, but feelings of enjoyment have been replaced with feelings of fear. The only way for all 13 of them to survive is to play the most cruel games to pass each stage.