''Where am I?!'' screamed Ruria, a high school gal who woke up in an unfamiliar room (an erotic trap dungeon). A message appeared on the monitor saying: ''You cannot leave unless you complete all the missions.'' For some reason, the idiot Ruria is full of motivation and decides to take on the missions but it turns out to be a vicious erotic trap dungeon that specializes in ''nipple torture,'' including ''100 round trips of nipple masturbation with lotion gauze'' and ''nipple torture with sensory deprivation.'' Will Ruria be able to fulfill the harsh ''nipple torture orders'' and escape the dungeon safely?