Ji-hye, Yeong-joon, Soo-yeong, and Mi-na enjoys the bachelor party! The next morning, Ji-hye had her ass ripped apart and Yeong-joon had erectile dysfunction, but none of them remembers what happened. They're on the hunt for clues! Three people checked Joon-tae's items in the kitchen. They found out that Joon-tae visited the party. The questioning of Joon-tae revealed that Ji-hye and he had sex but there are more suspicions. The size of Joon-tae's small dick can never tear Ji-hye's ass apart. Who the hell ripped Ji-hye apart?