The Bullion Dollar Riddle

The Bullion Dollar Riddle is the first chapter in Hero Mode, and follows The Riddler and his team on his mission to raid the Gotham Bullion Fortress.

Hero Mode
The team plans to work together to raid the Gotham Bullion Fortress and steal the gold housed within. Every team member has a role in the plan. Mr. Freeze will use a large ice ray to freeze an ice bridge over the water separating Gotham's mainland from the Fortress. Everyone will cross over the bridge, and Poison Ivy will plant seeds in the ground that form into giant beanstalks, carrying the team up the cliff to the Fortress. Clayface will then take the Golden Key and use it to open up the door to the vault, making all the gold ripe for the taking.

The first task is acquiring the Golden Key, which has fallen to Clayface. Clayface blew up the bank vault, providing The Riddler, Two-Face, and himself access to the vault, but also alerting the Dynamic Duo to their criminal activities. When Batman and Robin arrive, they find Clayface still in the bank. After dousing Clayface in water, turning his body to almost a putty-like state, the Dynamic Duo notice The Riddler and Two-Face watching from just outside the vault. The Dynamic Duo give chase, but The Riddler and Two-Face escape in Two-Face's Truck. Batman throws a tracking batarang at the truck whilst The Riddler tosses a clue box at the pair. Clayface is then carted off in a trash can while Batman studies the box.

We next see the Dynamic Duo chasing after the GPS location located in the tracking batarang stuck in the roof of Two-Face's Truck.