An animated action/adventure series set in the 19th century, a time when the world was excited by the discoveries of strange and faraway places. Sam is a 14-year-old orphan boy who escapes from the colony of Sydney in a quest to find his rebellious older brother Tom. He is unofficially adopted by Captain Billy Branscombe, master of a merchant sailing ship, and his 13-year-old daughter Bridie. Together they sail the world encountering all kinds of people, incidents and escapades. Rebellions in China, crocodiles and headhunters in Borneo, slave traders in the Pacific Islands - these experiences and more provide the backdrop that tests Sam's courage and ability and challenge his determination to overcome the obstacles thrown in his path.