Kai was born into an abusive family. He didn't know who his real father was and only knew his stepfather. When he was 10, he couldn't take it any more and ran away from home and ended up at an adoption centre. That's where he met Zak and Violet, his new loving parents. 4 years later, something happens to Kai, causing him to age regress. Zak and Violet help him through it. Zak is #dadofthecentury