. Curious, he takes it to his laptop and finds only one file:

: The sound is tinny, capturing the distant chirping of cicadas and the muffled voice of the person behind the camera—Elias’s late grandfather. He’s laughing at something she just said, a sound Elias hasn’t heard in over a decade. The Mystery of YVM-AL05

As Elias watches, he realizes this isn't just a random clip. The "YVM" stands for "Youth Volunteer Missions," a program his grandparents ran in Eastern Europe during the mid-2000s. Alina was a local translator who had become like a daughter to them.

: A young woman with a bright, infectious laugh is sitting on a checkered picnic blanket. She is wearing a sun hat that keeps slipping over her eyes. This is Alina. The Moment

The story begins in a dusty attic in a sleepy suburb. Elias, a young man helping his grandmother clear out years of accumulated history, finds an unlabeled silver CD-R. On it, written in fading black marker, is a single code: