After three years of capturing and reforming Jumba's experiments, the others are rewarded for their job well done. However, there is one more experiment on the loose that Hamsterviel has created to destroy the other experiments and names him Leroy after the others are rewarded and living their lives after their adventures come to an end.

Cherry, Atticus, Mo, and Patch are bored as school starts back next week after Christmas vacation, so they go to Drell who decides to take them to Notre Dame in Paris to the Feast of Fools and they learn to not judge others simply based on appearance when they meet Quasimodo.

On a dark and stormy night at the Fudo residence and the power goes out, the group is sent back in time to a Persian village and meet a young, selfish, and arrogant emperor by the name of Kuzco who is turned into a llama by his former adviser who wants to get rid of him for firing her and plots a heinous revenge.

Cherry gets a call from her cousin Tip who she had not heard from in a long time. However, she is asked with Mo, Atticus, and Patch to protect the Earth from invading aliens known as The Boov led by Captain Smek. The Boov succeed in getting rid of every human in the world and moving them somewhere else so they can live on the planet, but the others will need a little help.

Domino and Oddball come to town to celebrate Christmas with their Uncle Patch and their friends, the Air Buddies. Along the way, they meet up with Puppy Paws and his siblings: Noble, Charity, Hope, and Jingle. Puppy Paws wants to run away from the North Pole to be a normal puppy, but this may ruin the spirit of Christmas if he is not back home in time for the holidays.

It's time for Atticus to go to the Dragon Ball Z world and begin his training under Goku along with being a Sayia Man with Videl and Gohan. An old man tells them about a legendary hero from 1,000 years ago by the name of Tapion, but it becomes an adventure for him as well.

Akito, Estelle, Vincent, Felicity, Lee, Marc, Tony, and Megan's school is getting a new foreign exchange student, but not just any exchange student, the student is Star Butterfly who is the princess of another dimension known as Mewni.

Cherry comes with Patch and Atticus to spend the summer in the place known as 'Gravity Falls' where Atticus's cousin Wendy works at in the Mystery Shack. There, they meet Dipper and Mabel who are also spending the summer to meet their great-uncle and they all go on all sorts of strange and unusual adventures that are beyond average.

Cherry and Atticus are warned by Drell of the Ghost King who has been woken up after so long by a nefarious foe named Vlad Plasmius and they must go to Amity Park and meet a boy who is actually known as Danny Phantom.

It's summer vacation, Atticus has been having unusual dreams about being in the water, but not exactly drowning. His family seems to wonder about this, but his mother reveals to him that she is the former Queen Athena's sister and that they are considered royalty and decide to have an adventurous summer vacation in the mythical world of Atlantica.