Frank and Joe are brothers, but that won't stop them from competing against each other at the Fun World arcade's video game tournament. The boys make a bet: Whoever wins the competition gets to move into the cool new room their dad just built! But suddenly money goes missing. The owner of Fun World shuts down the tournament until the stolen cash is returned! Can the boys figure out who took it? Or will their chances of victory -- and a brand-new room!...

Frank and his brother, Joe, are excited! ...their team, the Bayport Bandits, has a real shot at winning. ...The charm is their teammate Jason's mitt. His dad, a major-league pitcher, wore it in the World Series! ... Right before the game, Jason's mitt goes missing! The team is devastated. Can Frank and Joe solve the case of the missing mitt before the Bandits lose the game?

When the Hardys attend a celebration of the International Explorers Guild in Tunisia, they soon find that a murderer is lurking in the palace.