Shen Tinglan, an approach controller, and He Yunxiao, a cold and aloof 787 captain, enter a whirlwind marriage after meeting through a matchmaking arrangement. They begin their married life with a "Marriage Operations Checklist," setting the stage for a romance that blossoms after marriage. One protects flight routes from the ground, while the other repeatedly returns home from 10,000 meters above the earth. Through thunderstorms, long-distance separation, and professional challenges, they gradually become certain of their love for each other. Meanwhile, a runway accident from twelve years ago, which drove Shen Tinglan's mother away from the control tower, resurfaces. As forged recordings, fabricated voiceprints, and missing witnesses are gradually exposed, the two join forces to uncover the truth and protect the skies they each love.