Shi Pengpeng used the mathematics book as a dart board, and the dart hit the heel of the mathematics wizard Sirik. Sirik was very angry and wanted to punish Shi Pengpeng for accepting a bet. The bet is that Shi Pengpeng will get a perfect score in math once, write homework twice, and win three math competitions. If he can't find the key, Shi Pengpeng's math score will always fail...
