That popular project 'Ecstasy Charlie' has returned with a power-up! This time, it's an amateur girl showdown!? Competing in three types of bicycle races: tricycles, electric massage saddle bikes, and piston-hinged bikes, they test their physical strength and vaginal endurance. It's a best-of-three match with a cash prize for the winner and punishment games for the loser. It's embarrassing to climax in front of friends, but to win, you have to keep pedaling!