After breaking up with his girlfriend, Hyuk-jin and his friends agree to go on a trip to mend his broken heart. However, Hyuk-jin discovers he has made the trip alone, because the others had horrible hangovers and completely forgot. Over the next few days, he finds himself in a series of increasingly bizarre situations, most of them because of drinking out of respect for Korean culture. Now he must find a way to stop the world's worst hangover, get back to Seoul, and end this drunken odyssey.