In Guangming Community in Future City, ten-year-old inventor Li Xiaoyu can always hear "the cry of the world" from the leaking charging port and stuck chewing gum. With Amao, a smiling golden retriever, and Xiaoju, an orange cat with lightning stripes on its tail, he created a rainbow cleaner that uses sound waves to comb urban hair. It wasn't until one day when the rusty robot sprouted buds under the cherry blossom tree and Interstellar Express sent his father's recording from twenty years ago that he discovered that his father's disappearance was related to "Experiment 47" - this ecological project actually hid a danger that devoured happiness.
In order to solve the mystery, Xiaoyu and his partners embarked on a cross-galactic adventure: using the Earth's Double Ninth Cake to melt Andromeda's frozen memories, raising Ursa Minor's inferior jellyfish into a confident seahorse, and even teaching Aquarius children to use light rails instead of language. However, when an antimatter blizzard froze the entire community, he understood the answer left behind by his father: the real technology is not to conquer nature, but to stop Amao's collar from sounding the alarm and allow Xiao Ju's tail to sweep through all lonely corners.
In this game between childlike innocence and technology, the Rainbow Cleaning Team used inventions to warm up the nostalgia of the convenience store proprietress and Grandpa Chen's concern for stray cats, and also revealed the code of Father Yu's interstellar father's love - the best invention story is to turn the cries of every civilization into songs.
Purpose: The warmth of technology lies in listening to the voices of all things. Real progress is to allow all life to gain dignity and smile in a symbiotic world.