Complex sentence: Consequently, the rival band enlists the help of Jeff, who summons Dragon Sound to fight at a train depot, but he and his men are soundly defeated by Dragon Sound's superior Tae Kwon Do.
Split into simpler sentences: Consequently, the rival band enlists the help of Jeff. Jeff summons Dragon Sound to fight at a train depot, but he and his men are soundly defeated by Dragon Sound's superior Tae Kwon Do.