Complex sentence: During the first level of the game, Keil and his dragon fly through a drowned city, where they encounter a small, Imperial patrol ship, which sends a report to a large fleet of ships flying above the clouds.
Split into simpler sentences: During the first level of the game, Keil and his dragon fly through a drowned city, where they encounter a small Imperial patrol ship. That ship sends a report to a large fleet of ships flying above the clouds.