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The story begins with the emergence of the first high-tech molcar in Molcity, with drivers beginning to ride state-of-the-art AI-driven Molcars. Potato and friends get involved in a chase between a mysterious organization and a Molcar AI named Cannon, and are saved by a talented driver. Potato finds out that the driver is in search of his missing Molcar, and gets the idea to use Cannon's AI functionality to help with the search.

Aurelio is an eight year old boy whose mother is very sick. One night, he sees her crossing a door, when he follows her, Aurelio finds himself in the world of the dead. There, he finds "La muerte" (The death), who then becomes his mentor and helps him finding his mom. When he finally finds her, he must decide whether go back to his world or stay there with his mom.

Everyone knows that the stork delivers babies, but where do the storks get the babies from? The answer lies up in the stratosphere, where cloud people sculpt babies from clouds and bring them to life. Gus, a lonely and insecure grey cloud, is a master at creating "dangerous" babies. Crocodiles, porcupines, rams and more - Gus's beloved creations are works of art, but more than a handful for his loyal delivery stork partner, Peck. As Gus's creations become more and more rambunctious, Peck's job gets harder and harder. How will Peck manage to handle both his hazardous cargo and his friend's fiery temperament?