Though a penniless street artist with no straight visions in life, Hee Do (Shin Ha Kyun) is quite happy having his girlfriend Eun Ah at his side. One day, he receives an anonymous phone call followed by a visit from a wealthy middle aged woman Hye Rin (Lee Hye Young, No Blood No Tears). Soon, Hee Do is whisked into a big mansion where he meets an old financial tycoon Kang Noh Sik (Byun Hee Bong) who challenges him to a devious little game. The catch is if Hee Do loses the game, he must trade his youth to the old man in exchange for three billion won. Not only does Hee Do lose the bet in a flash, but also squanders everything he once had including his youthful body. Now, in a tight battle of wits, Hee Do must find a way to get his own life and body back before Noh Sik erases all traces of the past.