The quest of Carmen, who, after losing her daughter in an accident receives a letter informing her that she has been approved for the adoption of Thi Mai, the young Vietnamese girl in the film’s title.
Accompanied by her two best friends, Elvira and Rosa, who have never set foot outside Spain, Marta travels to Asia to meet her new daughter. There, the three women encounter a series of increasingly complicated, exotic and outlandish situations which bring out the most eccentric aspects of each of their personalities. Andrés, a Spanish actor who upped sticks to Hanoi to live with his partner, and a local tour guide also have their parts to play in the adventure.