Sam's mum is livid when a pterodactyl steals his fifth lot of homework. She threatens to send Sam to a school for naughty boys. Sam and Nathan, his brother, must find a way to get up Saurus hill to find the homework-stealing pterodactyl. Sam's mum is livid when a pterodactyl steals his fifth lot of homework. She threatens to send Sam to a school for naughty boys. Sam and Nathan, his brother, must find a way to get up Saurus hill to find the homework-stealing pterodactyl. Nathan and Sam build a pterodactyl suit and set off for Saurus hill. But there's an eggshaped surprise in store for them up there!