After Baymax takes down the majority of Team Hero 6—Fredzilla, Honey Lemon, Go-Go, and Wasabi—in a series of rap battles during his chaotic rampage through San Fransokyo, he soars into the sky. Hiro arrives with a clone of Baymax, and they prepare for an epic musical duel high above the city. Will Hiro manage to safely bring Baymax back to his original self using Tadashi's healthcare chip, or is this the final chapter for him?