Detective Aaron Falk recalls the beginning of the case. A year earlier, Falk left his home in Melbourne to go to the Marralee Valley in Australia’s wine country for the christening of his friend Greg Raco’s son Henry. Raco, a police officer in Falk’s hometown of Kiewarra, is from Marralee. While Falk was in town, a baby was discovered in a stroller at the Marralee Valley Annual Food and Wine Festival. The baby’s name—Zoe Gillespie—was written on the label of her onesie. Staff at the festival called her mother, Kim, but her phone was in the stroller, along with her ID, keys, and money. They reached her father, Rohan, who was dining in a nearby restaurant with his parents, and he came to claim Zoe. Two days later, Kim’s shoe was discovered by a reservoir near the festival, but the search eventually went cold. The christening was postponed because of Kim’s disappearance.

A year later, Falk returns to the Marralee Valley for the rescheduled christening. At a scenic overlook, he runs into Zoe and Rohan. They discuss Kim’s disappearance, which is still unsolved.