What is the plot of Kensuke's Kingdom?

"Kensuke's Kingdom," written by Michael Morpurgo, follows the story of a young boy named Michael who is shipwrecked on a deserted island after falling off a yacht during a family sailing trip. There, he discovers he is not alone; an elderly Japanese man named Kensuke has been living on the island for years. As Michael and Kensuke form a bond, they share stories and learn from each other, highlighting themes of friendship, survival, and cultural understanding. Ultimately, Michael's experiences on the island lead to personal growth and a deeper appreciation for his home and family.