God is getting fed up with humanity. It just keeps getting worse and worse, and the Devil is not helping any with his constant badgering to destroy everyone. It all comes down to a bet. God and the Devil bet the world's future on one person; Bob. Throughout the series, Bob has to do missions for God which will better humanity, while at the same time fighting the temptations that the Devil throws in front of him. Bob is the only person who can see God and the Devil, well, except for his son Andy.