Hyung-wook, an infamous assassin known for his perfection, slips on soap at a public sauna and passes out. Jae-sung, a not famous unknown actor, witnesses the accident and switches his locker key with Hyung-wook's. Jae-sung opens the locker to find the key to a fancy car which leads him to a luxurious condo. On the other hand, Hyung-wook wakes up with amnesia.
