Complex sentence: However, when he returns to his present time, he learns that his actions have made things worse: instead of Chase joining the Heylin side, it is Chase's former friend Master Monk Guan whom Hannibal Bean turns evil.
Split into simpler sentences: However, when he returns to his present time, he learns that his actions have made things worse. Instead of Chase joining the Heylin side, it is Chase's former friend Master Monk Guan whom Hannibal Bean turns evil.