1670. Among fights for the New World colonization and the commercial supremacy, a young Irishman named Sidvester O'Neill sets off for the Caribbean Sea heading to the isle of Puerto Dorado. He aims to find his brother Alexander, who left years before, and take him back home. But his journey will have unexpected implications. A secret hides in the darkness of the island's jungle, and the main European powers (France, England and Holland) yearn for it. Intrigues, deceits and plots pack Puerto Dorado's days, in a fight between the smartes captains in the island. As these events occur, the alert eye of a pirate ship anchored on the horizon is keeping an eye on them, in front of everyone's and no man's tiny land.