Daniel had a vision in 555 BC, the first year of King Belshazzar's rule, where he saw four beasts arise from the sea representing four kingdoms. The beasts were a lion, bear, leopard, and a 10-horned beast. An 11th horn on the fourth beast represented the Antichrist. This document provides context about the timeline of kings in Babylon and an outline to study Daniel's prophetic vision in chapter 7.