Noby uses Doraemon's pen gadget to make a black hole that sucks things up and then a white hole that releases the item. But when Noby fails to listen to Doraemon, having lost the white pen, a black hole he forgot to erase begins to increase its gravity from sucking in Sneech's comic book, Sneech himself, Big G, Sue's violin, a kettle corn truck, and his own mom.