Every summer, teenage runaway girls in Shibuya are constantly being picked up by authorities. But this year, something changed—older men who used to prowl the streets at night have completely disappeared. Why? Because the underground website they once relied on has been shut down. Known as the "Runaway Bulletin Board," this site allowed runaway girls to post online requests for shelter and food, choosing seemingly safe individuals to stay with. Posts on the board often received over 200 responses per day. Men would offer lodging and meals in exchange for fulfilling their sexual desires. This is a documentary-style work that honestly portrays how older men claimed they were "protecting underage girls," while revealing how these teenage girls struggled to protect themselves. "Runaway Bulletin Board: Episode 1" is a raw, truthful story about the summer mistakes made by men who tried to save the life of a girl named Rinko.