After spending one unforgettable night together with Ji Beiyu, Yu Mo became pregnant with their son, Lele. Five years later, Lele has grown up, but he was born deaf. At the airport, he unexpectedly encounters Ji Beiyu and his three great-grandfathers. Overjoyed to recognize their great-grandson, the three elderly men rush to embrace him, only for Lele to mistake them for child traffickers. Through her own hard work, Yu Mo becomes a pilot. When the newly transferred Captain Ji Beiyu arrives, the two unexpectedly become a bickering yet affectionate pair. Through one hilarious encounter after another, and Ji Beiyu repeatedly coming to her rescue, they gradually fall for each other. Eventually, the three elderly men reunite with Lele, and Ji Beiyu finally discovers that the woman he has fallen deeply in love with, Yu Mo, is actually Lele's mother. The family finally gets its happy ending.