小精灵伯纳德（马丁·弗瑞曼 Martin Freeman 配音）是一位身份卑微的粪便清理员，做事神经大条，囧态嗅事不断，而他的梦想是成为大发明家。在今年的圣诞科技大赛上，他又搞砸了实验。恰巧正是这次小小的实验意外给精灵城引来了危机。大反派班尼（蒂姆·克里 Tim Curry 配音）侵袭精灵城，所有人都面临灭顶之灾。伯纳德在重重险境中误打误撞，却惊喜不断，发现自己是唯一可以拯救这场灾难的人，在甜心女特工雪妮（阿什丽·提斯代尔 Ashley Tisdale 配音）的鼓励下，他鼓起勇气誓要挽救一切……...
The host of a failing children's science TV show attempts to fulfill his childhood dream of being an astronaut by building a rocket ship in his garage, all while trying to makes sense of surreal events around him....
