Mad Grandad and the Kleptoes

When things keep disappearing from Grandad's house, he and his grandson Lenny can't figure out who's behind it. Their investigation leads them to discover the Kleptoes, a sneaky family of creatures who have been hiding all the missing items in their secret hideout. But when Lenny and Grandad try to get their belongings back, they find that the Kleptoes especially Old Mother Kleptoe won't give them up without a fight.