ARKS (Divinity: Original Sin 2)

Passed drifted. the Isle of blood moon and so on. on the ship a lot of people, not overcrowded. but only offer to sail to another island. although all of me is heavily touted in the ARKS. the plot of how to get to the ARKS? to go to the island and then from there to the ARKS in the story gets? or I don't know.