Challenge: The 4400 Fusion/X-Over
Pick a fandom of your choice. Take the characters from that fandom and give them 'The 4400' treatment.

Your character/characters were taken from their original place in time without warning or reason. No trace of them was ever found.

Cut to 2004 when a glowing UFO appears out past Jupiter, on a collision course with Earth. The closer it comes, the more distinct the ball of light. It slows as it approaches Earth, until it stops over a lake outside of a major urban city. The ball of light explodes in a wave of light that blinds everyone who showed up to gawk. When their vision clears, your character/characters are just one of 4400 people returned from parts unknown.

Here is where your creative part comes in. What happens next?