After escaping the Fromm Gang, the Sand Sloth crash-lands in time for the Boonta Speeder Race. Sise Fromm hires bounty hunter Boba Fett to capture the racers.
In this hour-long special, the Galactic Empire dispatches a gigantic droid to take control of a planet. R2-D2 and C-3PO arrive to find their new master captured and must work with locals to defeat the Great Heep.
During a brief table-waiting job, the droids run into bounty hunter Kleb Zellock. Then they are purchased by miner Jann Tosh and meet a mysterious alien with a bounty on his head.
A new ally, Jessica Meade, transports Prince Mon Julpa, Jann Tosh and the droids to Tammuz-an. A vizier has subverted the throne and hires IG-88 to acquire Julpa's scepter.
After being jettisoned over Ingo by a former master, R2-D2 and C-3PO are discovered by landspeeder racers. They accidentally encounter the Fromm Gang and are helped by Kea Moll.
The droids and racers go with Kea to Annoo to stay with her mother. After realizing they are on a Rebel base, they mount defenses against the Fromm Gang's deadly Trigon One.