10 parts Ongoing In a futuristic city, a group of young inventors discovers an ancient device hidden beneath the metropolis. This device allows them to send messages back in time, but they can only communicate with one person from the past: a brilliant scientist who disappeared mysteriously decades ago. As they exchange messages, they learn that the scientist's disappearance is tied to a catastrophic event that threatens their present-day world.
However, there's a twist; every message they send alters their timeline, sometimes in unexpected and dangerous ways. They must balance their communication carefully, trying to prevent the impending disaster while uncovering the scientist's fate. But as the inventors get closer to the truth, they begin to question whether saving the future means erasing their own existence.