"Ngày Xưa Có Một Chuyện Tình" revolves around the intertwined friendship and love story of two boys and a girl from childhood to adulthood, as they face the challenges of fate. Spanning four stages from 1987 to 2000, the three friends—Vinh, Miền, and Phúc—grow up together, experiencing the innocence of love, life's struggles, and personal growth along the way.
With just a few hours before heading to the airport, a kind-hearted couple agreed to babysit a newborn baby from their neighbor. Little did they know, shortly thereafter, they discovered that the baby had passed away since... A thrilling and heart-wrenching story unfolded in the fateful evening at their old apartment building. The couple had to rack their brains to escape this dire situation, while also uncovering the culprit who pushed them into this predicament.
In the serene world of Hoa and Vinh, tranquility is shattered when their beloved daughter vanishes on the eve of the New Year. Desperate and determined, Hoa turns to the power of social media, initiating a live broadcast in a heartfelt plea for assistance from the global community.