Ex-boxer Sakai now lives a normal life fixing pachinko machines under the friendly eye of his aging boss Tsumura. When their long lost mutual friend Mizuguchi suddenly shows up, their placid routine is soon overrun with yakuza gangs and corrupt police officials, all of whom become increasingly hostile to Sakai and Tsumura. Believing Mizuguchi passed along "the package" to Sakai, they abduct the elderly Tsumura and attempt to blackmail and physically harass Sakai. Things look pretty bleak indeed until Sakai begins re-evaluating his pachinko-mending ways.