Rookie courier Li Lele wakes up and travels across the galaxy, becoming the only human alien courier. He forcibly formed a team with his lazy, narcissistic and changeable alien partner Bloom and the poisonous tongue AI Madoka, and took over hundreds of tasks of "delivering goods to the endless star sea". Each express delivery targets a strange planet with a mixture of different races, civilizations, politics, and technologies, triggering a series of hilarious disasters and misunderstandings. In the process of entangled with the cool female officer Lilian and fighting openly and secretly with the manager Yuan, Lele gradually lost the loneliness of the earth and merged into the crazy and diverse cosmic world. As the delivery road reveals the power struggle in the galaxy, the truth about the alien race, and the hidden ambitions of the express company, Li Lele must rely on the "humor and wisdom" of earth people to resolve the life and death crisis, and ultimately lead the alien race to resolve the galactic crisis and gain self-growth, friendship and strange alien love.