December 21, 2012. The end of the world. Zheng Zhi is optimistic. He finds a way to escape from the Earth, and runs away with Yan Xia. They steal a teacher's car, dine and dash, and escape from a police hunt. On the highway, they are stopped by the traffic police. Can they make it in time?２０１２年１２月２１日是傳聞中的世界末日。「末日」前一天，兩名高中生仍要為模擬考試而煩惱。鄭執性格樂天，從電台得知城外某處可以逃離地球，決定不再理會考試，與嚴夏一起逃走。他們偷了老師的汽車，在加油站賴賬，吃霸王餐，逃過警察的追捕。嚴夏本來膽小怕事，也變得膽大妄為。在公路上，他們被交通警察截查，最後會否趕得及離開地球呢？
