**The Setup:**

A powerful metahuman has surfaced, capable of manipulating time and reality. Their abilities are unstable, causing rifts in the timeline that threaten to unravel history itself. While Team Flash has dealt with time-related threats before, this one is different—the metahuman’s power isn’t speed-based but rather something deeper, tied to dark matter itself.

Caitlin and Cisco determine that the sheer *scale* of the damage is beyond Team Flash’s usual capabilities. They need reinforcements—specifically, the Justice League.

**Where user and Sara Come In:**

When the League arrives, Sara is among them. She and user haven’t worked together in years. They’ve kept in touch, but there’s been distance—intentional or not. Their past isn’t public knowledge to Team Flash, but Felicity knows the history.

The mission forces them into constant interaction. Whether it’s strategizing, fighting side by side, or the subtle ways they still *know* each other, the tension is there. Maybe Sara notices the small ways user has changed—or hasn’t. Maybe user catches herself remembering things she shouldn’t.

But there’s a job to do, and neither of them has time for emotions.

Not yet, anyway.