He might have to figure out how to survive on his own. Maybe he'll start by looking for fresh water sources like springs or collect rainwater. He could also try to find food such as fishing in the island's waters or hunting small animals if there are any.
I'm not sure specifically as there could be various stories with that title. It might be about a boy who literally gets his feet stuck in a pair of Ugg boots, perhaps due to some kind of accident like the boots being too tight or getting caught on something while he was putting them on or wearing them.
Perhaps Naruto will encounter some ancient spirits or deities that are native to the island. These entities could have their own agendas and might either help or hinder Naruto depending on how he interacts with them. Another possibility is that he meets some hermits who have been living on the island for a long time and have unique skills or knowledge that Naruto can learn from.
I'm not sure which specific 'Christmas story' this refers to. There are many Christmas stories, but this seems like a rather unusual and specific scenario. It could be a made - up or very local story. Maybe it's a modern, humorous take on a Christmas - related mishap where a boy gets his tongue stuck to a post during the Christmas season.
One possible Christmas story could be that a boy was so excited during Christmas. He saw a shiny pole, maybe it was a part of some Christmas decoration. Out of curiosity, he licked it and his tongue got stuck because it was freezing cold outside. Eventually, with the help of some kind neighbors who brought warm water, his tongue was freed.
Obviously, the main character is the boy. He's the one who is stuck in the Uggs. However, we can't really say more about him. He could be a school - boy on his way to class who suddenly finds himself in this predicament, or a little boy just playing around at home when it happens.