The Meeting of the Seven Kings

The Seven Kings of Holiday Land are assembled as well as their people to find out what God was saying about their Pagan origins-

"I will put an end to all her celebrations, her religious festivals, her Full and New Moons, her sabbaths, and all of her evil assemblies."- God, Hosea 2.11

Jack Skellington and Santa Claus were warned about this God, so they gathered the other kings and queens in order to help their kingdoms get stronger.