Complex sentence: They are tasked with recruiting new henchmen, and unwisely turn to inner-city thugs to fill the ranks, which backfires when the thugs (armed with actual firearms) mutiny and imprison the Monarch, Dr. Venture and the two original henchmen.
Split into simpler sentences: They are tasked with recruiting new henchmen, and unwisely turn to inner-city thugs to fill the ranks. This backfires when the thugs (armed with actual firearms) mutiny and imprison the Monarch, Dr. Venture and the two original henchmen.