Complex sentence: Meanwhile, Boone and his friends (Buldeo, Tabaqui, Lieutenant Wilkins, and Sergeant Harley) gather some bandits to capture Mowgli in order to find out where the treasure is.
Split into simpler sentences: Meanwhile, Boone and his friends (Lieutenant Wilkins and Sergeant Harley) team up with Buldeo and his confederate Tabaqui. The men gather some bandits to capture Mowgli in order to find out where the treasure is.