However , Bubblegum leaves Flame Princess in the care of Cinnamon Bun , who frees her and tells her the story of how she was locked up by her father .
Princess Bubblegum tests Flame Princess to understand why her emotions can become volatile .
Princess Bubblegum leaves Flame Princess in the care of Cinnamon Bun , who frees her and tells her the story of how she was locked up by her father .
Princess Bubblegum tests Flame Princess to understand why her emotions can become volatile .