When Max, Cat, Ant and Tiger are lured to NASTI by Dr X's mum in 'The Greenville Giant', it can mean only one thing trouble! However, Mrs X's plans go horribly wrong, leaving the friends with a very big problem.When Max, Cat, Ant and Tiger are lured to NASTI by Dr X's mum in 'The Greenville Giant', it can mean only one thing trouble! However, Mrs X's plans go horribly wrong, leaving the friends with a very big problem.