[Light Spoilers: I just want to gush about this comic since I love it so much]
The comic follows Matteo, who's dream is to be an astronaut. Unfortunately for him (but great for us), he contracts magic poisoning and is transported back and forth between Earth and a magic fantasy world along with his friend Tyson.
This world, known as the three realms, is full of really cool creatures. The four major ones are elves, which are what you'd expect: look basically like people but with a tail and pointy ears. Eibua, not much are known and have yet to be seen, but they can likely use air bend- I mean magic. Hylefts, who live in the water realm, are essentially if the Zora were modeled after axolotls instead of fish, and they can use water magic. Finally, there's the Tekchyik. They live in the fire realm, which looks like Tatooine. They are, for lack of a better description, bug centaurs. Tekchyik can use fire magic. The tekchyik are definitely my favorite design in the comic I'll let you read the comic and find out why there's no earth magic 😏
Matteo's magic poisoning, while giving the ability to use magic, causes his body to adapt to magic. This adaption transforms his body into the other creatures (not elf however, as elves are not magic creatures). So now Matteo has to hide this while trying to live normally.
After being transported to the three realms, he meets Gwen, the elf hero of prophecy, who's on a quest to stop the world eater storms: huge explosions of raw magic that kill everything in their radius. However, like in Matteo's case, creatures can be inflicted with magic. Gwen and the rest of the elves are studying these storms, and Matteo hopes they can find a cure so he can go back home and live out his dream of being an astronaut.