Modern teenager Zhou Che is struck by lightning and time-travels to the Zhenguan era of the Great Tang. Plunging from the sky straight into a palace banquet, he is mistaken by Li Shimin for an immortal descended from heaven. To save his life, he casually recites poems, builds a hot air balloon to prove his skills, and sets Chang'an ablaze with stir-fry cooking, accidentally winning the heart of Princess Changle. When a drought breaks out in Shandong and the national treasury is strained, Zhou Che offers brilliant strategies for disaster relief. While dodging imperial rewards and the princess's deep affection, he kicks off a hilarious and passionate counter-attack life in the Great Tang.