The life of a teenage hero

In this spinoff of 'a horse's howl', we get to see Adam, Julie, and Alex in high school, after ending the apocalypse, and Mable in university, getting her four year degree, to become a veterinarian. One day, they find out that many teenagers have been going missing and it's up to them and some new friends to figure who's doing this, and why! Along the journey, they face romance, flirting blonde boys, and lots of drama!
Can they get through their junior year of high school? Will they solve this mystery? Read to find out!