Complex sentence: Lister escapes from his new bride as the others are leaving with the O/G unit and they make their escape in Starbug but the chief's pet emohawk, a domesticated polymorph, stows away in the cargo hold, and begins stealing the crew's emotions.
Split into simpler sentences: Lister escapes from his new bride as the others are leaving with the O/G unit and they make their escape in Starbug. However, the chief sends his pet emohawk, a domesticated polymorph, after them; it stows away in the cargo hold, and begins stealing the crew's emotions.