Hmmmm, I think I'm putting a black hole in my Vision movie, but it sounds like a good idea with the wormhole. Maybe you could make a ship capable of extremely fast speeds get "chased" by a black hole, and they almost get sucked into the event hprizon. They somehow survive alive (the ship is heavily damaged though), but the captian died, and without him they are lost and cannot navigate. They are shot out at such tremendous speeds that they manage to gain speeds high enough to enter a wormhole and go back in time to save the captain. Then, as a little pun at the end, make the captian die suddenly from a shelf hitting him or something right after he is saved and everything is back to normal.

Well now I'm doomed to writing lines on the chalk-board, guess I better go back to designing a logo.