She gets the note just before lunch. She's in the PHQ in less than twenty minutes, then she knocks on Piggot's door politely.
"You seem awfully confident in your ability to keep them hidden from me."
Lung frowns.
"You could try to encourage me with something more than threats that will make me try to get creative to avoid?" she asks, and rubs her fingers together in the universal 'money' gesture.
"If you trusted that you wouldn't be holding my parents hostage," she points out.
His frown deepens. "I would prefer having your cooperation."
"And threatening my parents is the best way you could find to have it?"
He remains silent.
"You ever hear of carrots and sticks? You're all sticks, no carrots, and you'll fall, Lung."
He looks at one of his thugs and says, "Kill the father."
"Wait, no—"
—but the bullet is already in Rewind's father's brain.
It'll still take a few more minutes for Transit and the real Rewind to arrive at the parents' location, but the moment Lung notices the diamond armor that sprouted around Rewind's parents he explodes, and then jumps at the copy, trying to burn it to a crisp.
And the heroes start swarming into the warehouse.
Lorica's bots are on the case for Transit's pathing; Lorica herself keeps an eye on everything and does strategic advice.
He's nowhere to be seen.
"He seemed to need line of sight, I'll have a little warning before he can land on anybody -"
Glam's copies start dealing with unpowered thugs, there and where Rewind's parents are. "Silica, need a hand," they say, because they have a finite amount of attention and her golems are more effective versus unpowered people than versus Lung himself.
Glimmer slides and slams bodily onto Lung, who's still not large enough to shrug that off and is thrown onto a wall. "Windflower, now!"
Bots help; a cocktail of tranquilizers and poisons probably won't kill him but it's not going to do him any favors.
"Continue trying to poison him when you can, use your strongest shots," Armsmaster says, and turns his halberd into a long, electrified morningstar which he hits Lung with. "Miss Militia!"
Glam has pretty thoroughly neutralized the few thugs in the place (a small apartment in a small, old, dingy apartment building somewhere), and when Rewind and Transit arrive, Glam dismisses the armor encasing Rewind's mother. They keep the one holding her father, though.
When they disentangle, Rewind says, "I'm going to make him pay for that."
"Get yourself back to the last hop point," Transit tells Rewind, "can't likely carry all three of you."
"I'm gonna go kick Lung's ass is what I'll do," she growls. "My parents are safe, he won't be. I'll fly there."
"I got my armor, I can use it on him from afar, and besides, if he suddenly becomes singleminded at me that's not likely to make him tacticaly smarter." She flies in the direction of Lung's lair, but that'll still take a while. Flying's faster than running, but it's not very close.