"The Alien Force Twins!"
A storm forces the Batplane down in an isolated mountain range, where Batman and Robin encounter alien beings and two strange energy beings.
"The Boy Who Was Robin!"
Bruce Wayne takes in his young and arrogant cousin, Vanderveer Wayne, for a visit. When Van sees Batman and Robin costumes in the laundry (which Alfred explains away as masquerade costumes), he is inspired to impersonate Robin.
"The Joker's Greatest Triumph!"
The Joker sends Batman, Robin, and Commissioner Gordon clues to his upcoming crimes in the form of ship models, which initially stymies the Dynamic Duo.