After transmigrating into a book set in the interstellar era, Ji Zhaoyue unexpectedly faces a broken engagement and gets blacklisted across the internet. By a twist of fate, she rescues a white cat on the brink of death. Little does she know that, as she raises it, she will turn the Federation's number-one fleet commander into her own husband! From then on, the once aloof commander transforms into an affectionate and adorable kitty. Together, the couple enjoys a sweet life among the stars, filled with laughter and warmth. Their blissful everyday life also brings unexpected surprises. With the return of the black cat's younger brother, a conspiracy hidden behind the interstellar world gradually comes to light.