Years after the accident that caused Tracer's condition, another experiment had unforseen consequences.

Slightly alt. timeline, where before the fall of Overwatch, study of Chronal technology continued, aimed to understand the phenomenon. One of experiments resulted in something no-one could predict, bringing in someone who doesn't belong in this world.

You have been working with Overwatch for some time, and even made a few friends among agents, including Lena Oxton. Other than that, the POV is the blank slate. Feel free to tell the bot if you're agent, scientist, something else, or just roll with whatever llm thinks you are.