You're browsing the GameFAQs Message Boards as a guest. Sign Up for free (or Log In if you already have an account) to be able to post messages, change how messages are displayed, and view media in posts.
The story in the game is that Bell was abducted by aliens and is now in Strangetown. If you want to read the story, here it is: http://thesims2.ea.com/community/bella_interview.php
What they actually did to the game is much different. The real Bella is actually dead, and a fake townie Bella (with no memories, since she was 'abducted') is in Strangetown. This link explains how to resurrect the real Bella: http://tg.sims2techguide.net/guide.php?g=24
There are many Bella discussion topics on the main The Sims 2 board. Here is one: http://www.gamefaqs.com/boards/914811-the-sims-2/41435788