When Henry the Half-Time Hero and his League of Not Really Very Super Heroes are invited to the grand opening of HeroParc, the world’s best superhero theme park, it’s a dream come true. But the fun doesn’t last long and something goes terribly wrong: the world’s greatest heroes, including Henry’s dad Orangeman, start acting… fourteen. Moody, lazy and glued to their screens, they’ve completely stopped saving the world.

With disasters looming and villains running free, it’s up to Henry and his friends to step in. As they investigate, they uncover a chilling plot involving mass hypnosis, a mysterious American girl and a secret underground lair where the heroes’ worst enemies are planning a full-scale takeover.

Things aren’t looking good for planet earth. Will our brave League save the world in time – and get their parents back?

It’s the biggest and most daring adventure yet for Henry the Half-Time Hero and his League of Not Really Very Super Heroes!