In Search of the Castaways sets sail on a whirlwind adventure as brave young Mary Grant, her brother Robert, and a quirky professor follow a mysterious message in a bottle to rescue their missing father, a shipwrecked sea captain. Their journey spans the globe—from the stormy seas of South America to the snowy peaks of the Andes—facing natural disasters, daring escapes, and unexpected friendships along the way. Bursting with classic Disney magic, humor, and heart, this is a rousing tale of courage, family, and the unstoppable power of hope.