Ok well in a nut shell:

Death is God's messenger. God is disappointed because people are living sinful lives and so he decides to teach mankind to live better lives. When summoned by Death, the character Everyman hopes that his friends will go with him on the journey. First he goes to the Fellowship, his friends, and they tell him they would do anything for him, they would murder someone for him, but when they are faced with accompanying him they refuse. He then goes to Kinsman and Cousin, his family, who say the same thing and abandon him just as Fellowship did. On the judgment day, a person must bring their Account Book, which is every good deed and every bad deed of the person's life, and that will dictate whether they go to Heaven or Hell. Everyman goes to Goods which represents all his material value to ask to accompany him, but Goods tells him that he would be worse off with it because it would show God how materialistic he is. He then goes to Good Deeds, which is very weak and cannot even stand because of the lack of good deeds he has done in his life. It tells him it cannot go with him, but refers him to Knowledge, who takes him to Confession. In order to win salvation, Everyman must confess and do penance. He also gets Discretion, Strength, Beauty, and Five Wits(senses) to follow him. They follow him up until the edge of his grave, when only Good Deeds follows him into his grave. In the epilogue it says that his soul ascends to Heaven.

Personally, I really enjoyed it. It was also a loop hole sorta thing to talk about religion in school without getting in trouble for it.