it's nature vs. nurture when a nerd swaps bodies with the toughest guy in school! kang too-jee and woo soo-choi have swapped…their bodies! after becoming the subjects of a mad scientist's experiment with her latest invention – the quantum teleporter – their bodies are switched, leaving only their minds and spirits intact. woo soo-choi, who was once a model student, must face the life of kang too-jee, a teenage menace. never having an enemy in his life, he now has to deal with the handful of kang too-jee's list, but will his kinder, gentler demeanor ward off his rivals? or will survival determine his future? will he become the hardened fighter that matches his new exterior?