The monster's head is the controller of its body, but it's also an Achilles heel, which means that if its head is damaged, it will die. So, the monster needs to find a way to get its head out of the way before it can respond to the attack. The plan is to use the umbrella as a decoy to lure the phantom into the subway, and then use it to break through its body. The monster is so excited by the idea that the umbrella can do so much more than just defend itself that he's about to take it easy on the plan. But the monster is not having it. He's so excited that he starts to smack the kid who's supposed to be using the umbrella to bait the phantom. The kid's like, "Whoa, what's up with this plan? Is it all over yet?" The kid starts to panic, but then he realizes that the plan is all part of his plan. He realizes that if they only destroy one part of the phantom, it won't be