Bong Gi used to have dreams of making something of his life. But now all that seems like a distant memory. He has become fat, lazy and unemployed. In the real world, people are grossed out by him. He has never had a girlfriend and he spends his late nights fantasizing about women. His own life appalls him, but he has one escape, his online life. Gaming has become his everything. After another long, lonely night of gaming, he wakes up, and is shocked to find that he has transformed into a woman. Confused, He encounters a young woman named Sae Mi, who offers him advice. He soon falls for her charms but things get even more bizarre when he attempts to take revenge on Sang Woo, a school bully who turns out to be Sae Mi's older brother!