Hiccup is a regular teenager by day, and a superhero by... also day. Everyone is born with a timer that counts down the time until you see your soulmate, but Hiccup's timed out years ago. When Astrid sees Hiccup the superhero and her timer runs out, she wants to get to know her soulmate more, yet has conflicting feelings for a science nerd in her class.

Hiccup, the heir to the throne, always sneaked out of the palace to work at his mechanic's booth in the city. Unbeknownst to anyone, he fixed people's machines while trying to figure out how to make his father proud of him. After failing multiple times, he gave up and worked as a regular mechanic. That was, until he met Astrid.