Time travel mishaps

First Britain has a problem. in the old dungeons of his castle, and has no idea what it is and He's scared obviously, so he asks France to help him deal with it. but she refuses on account of old rivalries, and that no sane person would go down there without at least five other people to help. so they ask a few friends, America is having trouble with the states And refuses no one blames him all of them have met Texas and Rhode Island And they all agree that once they get the other 48 riled up all hell breaks lose. Russia decides an adventure would be fun China agrees a bit of fresh air would be nice Japan has always wanted to see Britain's castle . so they begin to venture deep into the cavern with Britain on the hotline directing them through the labyrinth but as the tightly woven stone becomes cobble and the cement into mortar and the air feels wetter they hear the strangest thing they hear whistling and the clink Of metal shackles keeping rhythm and the tune is firmiliar to only two