A new meta with a strange ability has public opinion divided on whether she’s a menace or a miracle-worker. The jury’s still out on the matter when the Snart siblings get caught in her crosshairs.
Or: Leonard and Lisa end up temporarily de-aged. It’ll wear off, but in the meantime, Team Flash has to figure out what the heck to do with them and how to keep them safe. Inviting them to live at the West house seems like a natural, if terrible, solution.