Hiromichi Kojima, the star batter of the Lycaons, heads to Okinawa to train and bring himself out of a slump. There, he meets Toua Tokuchi, a 134 km/h (83 mph) pitcher and the undisputed king of a gambling form of baseball called "". At Kojima's urging, Tokuchi signs up with the Lycaons. His contract, the ' contract', differs from the usual, though, in that he gets 5,000,000 yen for every out he pitches, but loses 50,000,000 yen for every run he gives up.