Half-brother, half-sister, half-superheroes!

There isn't a single person on Earth who hasn't dreamed of having superpowers, Mo and Sam (half-brother and sister, aged 11 and 9) are no exception! Until, one day, these siblings find out that their great-great-great-grandma once had a fling with a superhero (though it's not very clear who the lucky guy was).

They had a kid together, creating a potential hereditary "superhero streak" in Mo and Sam's family! Up until now, (almost) everyone in the family thought it was all just one big joke...