I sighted bowser approaching the castle again. I dropped the warning cannister into the pneumatic tube to Mario and Luigi's house, and climbed down from my roof. I left the building, and jumped in the air bus. I drove to the Mario brother's house and they climbed inside. We hauled tail up to the castle, but arrived too late. Bowser was already flying away. So I activated the flying function and we chased after him, keeping a discreet distance away. We were going to discover what castle he was in this time, without having to fight anyone else. Bowser's airship stopped after awhile. So we landed nearby and got out. Time to kick Bowser's butt!