Dong-hyun is a high school student. One day, he falls from the rooftop and bumps into Pan-soo who is a passerby. Pan-soo is a member of a criminal organization. When the two men wake up in the hospital, they discover that they have switched bodies.

Manny has moved to a new school, and it's not easy to fit in. After wishing he had more friends, Manny finds a mysterious collar and puts it on Rufus, the family dog. Suddenly, Rufus turns into a boy! Manny's not sure what to do, so he enrolls Rufus in school. When the other students notice Rufus's silly dog antics -- chasing squirrels, eating without utensils, asking for belly rubs, and catching a soccer ball with his mouth -- he immediately becomes the most popular kid around. Manny is jealous of his new best friend but eventually learns that a dog's loyalty to his owner always comes first.

Rufus is a dog but turns into a human with a pendant. He meets a girl named Kat who asks him to go out. Kat is a cat who can also turn into a human as well.

When nice-guy Jeremy Martin puts on mysterious virtual reality glasses at the mall, he suddenly loses his “inside voice” and starts spouting every thought he has out loud. Making matters worse, Jeremy is running for student council president against his classmate Milly, who is full of great ideas to improve the school. Desperate to get back to normal, Jeremy and his sister Victoria must figure out how to convince his brain that he can speak up for himself.

A pair of siblings make the most of a school snow day, while trying to avoid their nemesis, the Snowplowman.

A medieval English knight is magically transported to present day where he ends up falling for a high school science teacher.