Tank & Fizz: The Case of the Battling Bots

For monster sleuths Tank and Fizz, proving fourth-grade bully Rizzo Rawlins is planning to cheat in the upcoming Battle Bot Cup should be a piece of cake. But cake crumbles fast, and the case soon leads the detectives to a mysterious hacker known only as the Codex, who threatens all of Rockfall Mountain with a very dark fate....