Rika is a genius "pachinker" on the road to university. Her and her friend Riona are known as the "Undefeated Queens." They always win big at pachinko, but Rika's boyfriend Tohru hates gambling!

Yuria runs a stylish cafe in central Tokyo with her boyfriend, Takeshi. The cafe is doing reasonably well, and Yuria is starting to think about marriage. However, Takeshi falls prey to a Pachislot scam, and got himself into debt.