Synopsis: The MC, a university student who has no trouble picking up women is at a pub/eatery drinking with his friends (3 girls, 2 guys), gets rip roaring drunk and passes out in front of the pub. While in drunken state he is picked up by a mysterious women who leads him to a love hotel where he makes love to her but alas due to his extreme intoxication, he doesn't quite finish the job and passes out on her. When he wakes up in the morning, he is alone and wondering whether it was all just an erotic dream or not. Looking for evidence of the night's encounter, he walks into the bathroom to find a note written on the mirror with red lipstick expressing her satisfaction and mementos of the night's encounter: a red hair wig, an opera mask and black lingeries. Realizing it was all real, he vows to find her.
This is the MC's sexcapade as he goes on his mission to find the mysterious woman, based on his fuzzy recollection of the previous night's encounter.