Complex sentence: Kirk pursues Krall to Yorktown's ventilation system, where he attempts to unleash the bioweapon on the entire station, Kirk kicks Krall to an ejection hole within the Yorktown, causing the weapon and Krall to be ejected into space, where the weapon consumes Krall.
Split into simpler sentences: Kirk pursues Krall to Yorktown's ventilation system where he attempts to unleash the bioweapon on the entire station. Kirk forces Krall to an ejection hole within the Yorktown, causing the weapon and Krall to be ejected into space, where the weapon consumes Krall.