@Bianca @MuhSocialJustice Mormons believe that those who have been baptized go to spirit paradise and those who haven't go to spirit prison when they die. The people in paradise teach the people in prison and the people on earth do baptisms for them so that when they accept the gospel, they can enter into spirit paradise. Everyone in spirit paradise is basically guaranteed entrance into the top kingdom of heaven after the second coming of Christ and then the people in spirit prison get judged on whether they will go to the lowest or the middle kingdom.
It's a little more complicated than that but that's the gist.