After entering Dojuku Academy with top test scores, Takashi Zaizen quits the baseball team, and enters the shadowy "Investment Club." Now, he makes his first investment: in a bold move, he sinks 3 billion yen into his favorite game manufacturer. Catapulted into the world of grabbing profits, cutting losses, and hedging risks, he learns the harsh lessons passed down through Dojuku's 130 years of history. What key strategies will Takashi discover in his fight to win on his first gamble?