Brothers Greg and Lewis are enjoying a heatwave in the summer holidays -- until Loki, the god of mischief, buries their town, St Andrews, in a huge blizzard Loki is determined to conquer the universe and will stop at NOTHING to get his way. Greg, Lewis and their friend Susie must make a perilous journey to Asgard, the City of the Gods, to foil Loki's evil plan. Luckily, Thor, the god of thunder, has turned up to help them. Unfortunately, he's locked...