In the town of Grumpleton stands an old abandoned Manor. Rumour has it, the manor is haunted by the previous owners, Lord and Lady Grump, who are said to be guarding a hoard of treasure from anyone that dares enter inside. Callan and Evie are two best friends at school and forever getting up to mischief. After a school trip goes wrong, their school bus is diverted through the town of Grumpleton where they are all fated to spend the night. Will they make it out? Are the rumours true?