Teenage twins Sam and Ben Hazelton are abruptly uprooted from their normal, Australian, suburban existence and despatched to Germany for four months to live with some relatives they've only vaguely heard about. To their great surprise, they discover that their hosts are an eccentric family of faded aristocrats who live in an ancient castle in a remote, rural region. It's soon apparent that mayhem and chaos are the order of the day and that only one rule is likely to apply during their stay — always expect the unexpected!