Upcoming Penny Game Story help needed. (Patreon)

I need help with some story holes I have for Penny's upcoming game. OK so here is the Scenario: Penny wakes up to her creator (You can only see his/her silhouette so you dont know what her creator looks like. He has her do a bunch of things for the scene (A tutorial pretty much) Then something goes wrong, they barely get penny to safety and send her back in time in their time machine back to the 80's Her creator tells her that she has to Prevent (SOMETHING) from happening in the future that its destroying everything. Then signal cuts off. So the question I have for you guys is:

-What is the threat that destroys everything?

-What does it destroy? (All humanity, all resources, the earth?)

-What does she need to prevent happening?

You guys can DM me on discord, here on Patreon or whatever you want to respond I will take all ideas!