Gian is a stray cat. Because the greedy, it is the North drift of young Li Zhi caught, forced separation and lovely little cat Mu Na. So, gian began to try to escape! In the cat and human wits, they gradually from the strange to the familiar, become close partners, unforgettable year. 2012 in Beijing City, in the hinge strife of the machine, the young people to take control of their own destiny, and the animal's life also is so, in their respective "cage" in the struggle, confusion...... Find happiness.