Absolutely LOVE that board game. Everyone works together until the villain is revealed. Then the game moves into one of fifty scenarios (100 if you have the expansion).

It's my fav board game to play. Love the coop. Once someone becomes the bad guy they go to another room and read what task they have to complete, the survivors read from another book to see what they have to do to stop it. Then the game continues. Both sides have a few extra details the other side doesn't know about.

There is a YouTube series called TableTop that had a great video for this game and a bunch of others.

Pandemic is also great! Recommend playing the regular version before jumping into legacy.