Complex sentence: A girl named Alonna walks down the street, followed by a group of vampires, but when the vampires turn around, Alonna's brother Gunn and many others are there, armed and ready for a fight.
Split into simpler sentences: A girl named Alonna walks down the street, followed by a group of vampires. When the vampires turn around, Alonna's brother Gunn and many others are there, armed and ready for a fight.