After Geo Stelar and Luna Platz found Zack Temple in Loch Mess and Bud Bison in Whazzap, only Sonia Strumm is left. After some search, Bud discovers that a pilot saw a girl with pink clothes floating in the Bermuda Maze before his plane crashed, and Geo goes to Loch Mess to investigate. After talking with the pilot Tayle Spinn, Geo confirms that's Sonia (as Harp Note) and goes after her, entering the Bermuda Maze from Whazzap's Sky Wave. However, Sonia says she joined Dr. Vega and confronts Mega Man, breaking their Brother Band. At first Geo is in disbelief, but after talking with his friends, he realizes that Sonia is trying to protect him and returns to the Bermuda Maze to talk with her. The two fight, but Sonia admits that she only did it to protect Geo, and she reforms her Brother Band