The Walrus crew is stranded, with an army of Spanish soldiers standing between them and the precious Urca gold. With their crimes against their brethren no longer a secret, Flint and Silver must join forces in a desperate bid for survival.

Flint and Miranda prepare for a tough go of it. Silver becomes enlightened. Eleanor learns Max's secret. Vane makes a move.

Flint acquires an unlikely ally. Vane's crew seeks a sea change. Silver makes a sacrifice.

Civilization returns to Nassau, and sets its sights on Vane. Flint, Silver and Billy encounter a new enemy. Rackham takes a stand against his crew. Scott finds his place in the new regime.

Eleanor puts everything on the line to save Rogers. Billy recruits allies. Flint and Silver prepare for war.

Nassau is delivered. Silver makes a painful amends. Madi and Flint are separated. Rogers searches for Eleanor.

Silver and his men hunt for Flint on Skeleton Island. Madi receives an offer. Billy casts his lot.