Meloetta and Unikitty get hungry for sweets.
One day, when Dr. Fox invented a time machine, the doom lords took notice and planned to change the past so they could take over the kingdom. After getting sent back in time along with the doom lords, Kittycorn and Shy found themselves at a point in the past where Unikitty hosted a royal ball. It is up to Kittycorn and Shy to stop the doom lords and save the past.
Unikitty and Master Frown become critics. Unikitty likes to judge others with kindness, while Master Frown is ready to be a harsh judge.
Unikitty wants to make everybody happy, but Master Frown is a true challenge.
When a new sushi restaurant offers a special promotion to win a gold pass, Unikitty decides to enter the contest. The condition is to defeat a sumo wrestling champion. With help from Dr. Fox, Unikitty will put on the pounds needed.
After one of their scams completely blows up in their faces, the Eds barely manage to escape the wrath of the other Cul-De-Sac kids when they end up flying towards a dimensional rift that lands them in a new world where negativity appears to be taboo. The question is, how will a particular group of this world's residents react to these visitors and will the Eds ever get back home?
Unikitty meets Star Butterfly. The two girls quickly become friends.
After being free of her abusive mentor, Shy hoped that she could finally live a happy life in the Unikingdom. However, her pain would never truly end as she began to have nightmares of her traumatic past. Once she was aware of the nightmares Shy was dealing with, Kittycorn would do everything she can to help her girlfriend get through this dark time.
Unikitty and Dr. Fox have a pillow boxing match in the secret nursery for the last cookie.