The Gu family on the core planet of the Star Alliance welcomes a "country girl" Su Xingmian - she is a distant relative of the Gu family, who was taken into foster care after her parents died.
Because she comes from a lower-level planet, she does not understand aristocratic etiquette and interstellar social interactions, and has become the laughing stock of everyone in the Gu family: her sinister cousin Gu Manni is jealous of her potential and plots to frame her at every turn; the housekeeper Liu Ma, with her birth prejudice, deducts her expenses; even the second wife of the Gu family sneers at her and sees her as a thorn in their side.
But Su Xingmian was never a pushover. She secretly studied the mecha maintenance manual and earned her first pot of gold by helping people repair mechas; her cousin set up a trap for her to make a fool of herself at the banquet, but she stunned the audience with her mecha knowledge; facing prejudice and frame-up, she worked step by step, using her strength to break all contempt, and finally transformed from "Cinderella" into an interstellar strongman who can control mechas!
