Essentially a Norse version of a Godzilla movie, an ancient troll king is awakened by the construction of a railway tunnel and sets off across the modern day Norwegian landscape in order to return to the only home it knows; a cave under the royal palace in Oslo. The authorities enlist the aid of a palaeontologist (for reasons that are never fully clarified) but it is her estranged father who holds the key to saving the day. Likeable, if slightly stick, characters carry the story forwards, and I genuinely like how the writers played it completely straight; nary a hint of tongue in cheek at any stage.