Shen Zhi invents a medicine that makes aloof pets cling to their owners. To help his friend get over a painful breakup, Lin Feng persuades Shen Zhi to improve the formula and name it Matchmaker's Spring. They try it on humans, but it gets them into trouble. Shen Zhi spots a huge spaceship in the sky. After he reports it, he is committed to a mental hospital. When he is released, he discovers that aliens have occupied Earth and enacted a bizarre law: single people must go to prison. To avoid jail, people resort to every possible measure, even marrying their pets, leading to one ridiculous farce after another. Shen Zhi's medicine also comes in handy. What they don't expect is that the aliens have an even more sinister plan, and all of this is driven by an unspeakable "predicament." Shen Zhi and Lin Feng, who have gained both fame and fortune thanks to Matchmaker's Spring, are also hatching an enormous plan...
