Sean Duggan travels Down Under to uncover the truth behind the terrifying legends of the Australian Sea Serpent and if the creature actually exists. Sean discovers the serpent may be one in the same as the Australian Tiger Snake, which is a ferocious and resilient creature that has adapted to the harsh weather of the continent's extreme southern coast. Sean follows the killing trail of the Tiger Snake to Chappell Island to find out once and for all if the serpent monsters of lore and Tiger Snakes are the same creature.