Episode 13

Sam and Mark continue their search to find the world's next great superhero.

Four superheroes remain in the lair.

It is time for the superheroes to face Dr Dark's henchmen for the last time. The only way to get rid of them for good is to transform them back into harmless piglets by making them drink an antidote kept in a locked container. But where are the keys hidden and who has a steady hand? Will any of the superheroes have the nerve to stay calm in the face of danger?

Plus, the superheroes head off to visit a school to meet the citizens of their nation and give a presentation about themselves. Who is able to remain calm under pressure? Will they remain superhero-like at all times? And who will be the children's favourite?

And one more superhero will be chosen to power down, return back to their secret identity and leave the lair for good.