Act 1 - Decades ago, on one of their final missions, Freedom's Four defeat Doctor Voltus in his castle by trapping him in a closed cicruit system within his castle; they know it is a temporary fix.
Cut Scene 1 - In the present, the modern-day heroes (or Doc Stalwart if playing solo) meet with the retired older Liberty Lass and Bronze Beacon 2, who recount one of their final battles; we learn that Captain Reicher is up to something, and that something might be bringing back Doctor Voltus. Liberty Lass dons her gear for one last mission...
Act 2 - Travel to Doctor Voltus' old castle; a battle with Captain Reicher and minions. (Modern hero team with Liberty Lass).
Cut Scene 2 - Set up a device that can 'trap' Doctor Voltus; create mechanical keys in play that must trigger to permanently trap him so he can face trial for war crimes.
Act 3 - Final battle with Doctor Voltus with some triggered events built into the battle.
Cut Scene 3 - Funeral for Bronze Beacon 2? Something to finalize the events. Maybe have an event where the wrist bands he carried are donated to the museum his neice works for... set up the future Bronze Beacon? Historical comment about how this event was later ret-conned to include BB 3 even though that was never
Hmm. I solved a lot of this as I was blogging. I know that I spoke about this at some point, but writing is really a thinking process as much as it can be a process of revelation; I talked to my students earlier this year about how I don't use writing to put down the things I already have in my head. Sometimes, I sit down with only the vaguest idea, but the PROCESS of writing it down and getting it out in front of my eyeballs allows me to see how the dots connect. That is exactly what happened here. What I ended up writing down is a lot more than was in my head, and much better organized, than when I started. Writing process for the win!