The Sea of Stars and Three-Colored Flowers tells the coming-of-age story of three very different best friends, Lin Xiaoman, a coding genius; Qi Yue, a fiery race car driver; and Su Mengyao, a romantic singer. From their childhood in the residential compound to their thirties, they forge a lifelong friendship in their kindergarten "Anti-Boys Alliance," experience the first stirrings of love and the fervor of chasing their dreams as students, then carve their own paths through university and the working world. Lin Xiaoman struggles to get her startup off the ground, Qi Yue withstands the pressure of the racing world, and Su Mengyao stays true to her artistic ideals. Through it all, they remain each other's strongest support.
At the heart of the story is how, grounded in their deep friendship, they shine in their respective fields, cybersecurity, professional racing, and independent music, and find true love with a childhood friend who always has their back, a devoted younger fan, and a brilliant, deeply devoted scholar. Then they fulfill a childhood promise by planning a triple wedding on the same day, blending technology, speed, and starlight into a celebration called "Three-Colored Flower Brides."