Baymax is experiencing a personality malfunction. Luckily, Hiro has written new chip that should pull his different personalities together while he recharges. He inserts the chip into Baymax, and he goes into sleep mode.
Inside his dream, Baymax meets three other Baymaxes which define different parts of his personality. Logical, low battery, and heroic. Remembering what Hiro said, the four Baymaxes begin to argue over who should pull themselves together and who is the prime Baymax. Suddenly a giant Baymax, representing his destructive side, emerges and stomps towards them. The four Baymaxes agree the only way to help giant Baymax is to insert a giant personality, which fell in a tree earlier. However, it gets flicked out and lands on a monorail car. Hero Baymax flies after it, while the other three Baymaxes flee from the giant Baymax.
Hero Baymax retrieves the chips and the giant Baymax captures the other three Baymaxes in his hand. Hero Baymax arrives and inserts the giant chip into the giant Baymax, which calms him. With all five Baymaxes together, they fist bump and become whole. Baymax then comes back online, with his personality restored.
- Unlike the regular shorts, this one consists CGI animation in Baymax's dream created in Unity.