Pei Yan and his sister Pei Yu are cat aliens from planet Meow and come to Earth for a special mission. In their cat form, they will meet Qin Xue who will feed and take care of them in the streets. When Qin Xue's mother gets abruptly killed, Qin Xue has to face debts and bullying from her classmates. Pei Yan and Pei Yu take human form to rescue her and invite her to live together. Will Pei Yan and Pei Yu be able to keep their identity secret? (Source: Chinese = Kuaishou.com || Translation = MyDramaList)