Nana, who works for a major railway company, volunteers as bait to prevent groping and conducts crackdowns. That day too, she caught an unsuspecting groper. There, a young man named Kazuo appeared as a witness. She was impressed by his actions overflowing with a sense of justice, but the words he left behind, 'I also like groping...', stuck in her heart… Several days later, while commuting, Nana suddenly had her crotch fondled by Kazuo. Although she tried to resist the sudden act, her body gradually grew hot against her will…
