Synopsis

“Spinnerbait” is a youth crime suspense story that follows ordinary high school student Mitsui as he becomes entangled in the vigilante group “Spinner Bait.”
 
Disguising itself as a fishing club, the organization engages in activities that border on extortion. They crack down on crime through force, and a strict order of hierarchy is determined by the points each member earns.
Unaware of the group’s true nature, Mitsui joins the club, only to find himself stuck at the very bottom of the hierarchy with zero points.
 
When a series of murders suddenly erupts, the town is shaken to its core, and Mitsui – by a twist of fate – is drawn into the hunt for the killer. As the investigation intensifies, the internal hierarchy within Spinnerbait shifts dramatically, and the relationships among its members become increasingly twisted and entangled.