 Batman manages to escape the Riddler s death trap. He and Robin decide to lay low until they can figure out the Riddler s caper. Meanwhile, the Riddler frees King Boris, who brings a gift to a major monument in Gotham City. It turns out the Riddler has substituted a bomb for King Boris s gift and he is demanding a ransom. The Riddler, though, overplays his hand, enabling Batman and Robin to capture the Riddler and his gang.