A vicious group is said to recruit fellow gropers online, then surround women on trains and sexually assault them together. One particular car on the Saikyo Line has become notorious among train-groping fanatics. They corner their target, leaving her too terrified and confused to cry out, then form a human wall while exposing her breasts and ass. Hands reach in from every direction to grope her tits and finger her pussy. The assaults escalate to making her wet herself, grabbing her head for forced deep-throat, covering her mouth while forcing intercourse, and stripping her for public exposure. This four-hour documentary-style groping compilation portrays the anguished ordeals of twenty women targeted by these brazen attackers.