One Piece, Vol. 15 (Viz Media)

As a child, Monkey D. Luffy was inspired to become a pirate aby listening to the tales of the buccaneer 'Red-Haired' Shanks. But Luffy's life changed when he accidentally ate the fruit of the Gum-Gum Tree, and gained the power to stretch like rubber...at the cost of never being able to swim again!Years later, still vowing to become the king of the pirates, Luffy sets out on his adventure...one guy alone in a rowboat, in search of the legendary 'One Piece', said to be the greatest treasure in the world...Nami's sick!

Now the Merry Go is without her navigator! Luffy and crew have but one choice - find land and hopefully a doctor. They miraculously stumble upon Drum Island where it is eternally winter, but upon arriving they find out the island has only one doctor - and she's a witch!

With Nami's life on the line, Luffy sets out through the snow-laden fields to find this doctor, witch or not!