Poor Mega Man. He doesn't realize that Bluto traced his steps the whole way. The area of Wily's fortress he's inside is a poorly lit storage room, which has been cleared out to serve as a trap. With nowhere to run, and a quartet of robots surrounding him, he's in lots of trouble.
What's that red thing that struck Mega Man? Could that be a hint at one of the robots' identities? Or am I just teasing you by reusing parts of sprites?