pirates world end plot 3

Barbossa tricks the other pirate lords into yielding their "pieces of eight" rank insignias, which he needs to free Calypso, who is bound in human form as Tia Dalma. As Barbossa releases her in a ritual, Will discloses that it was Davy Jones, her lover, who betrayed her to the Brethren Court. Her fury unleashes a violent maelstrom just as the Navy's massive fleet appears on the horizon. During the battle, Sparrow escapes the Flying Dutchman's brig and steals the Dead Man's Chest. Meanwhile, Davy Jones kills Mercer and obtains the key to the chest, which Jack then steals from Jones during a duel. The Black Pearl and the Flying Dutchman face off near the center of a massive maelstrom. Will proposes to Elizabeth, and Captain Barbossa marries them in the midst of battle. Will boards the Flying Dutchman to retrieve the chest, but is mortally wounded by Davy Jones. As Bootstrap Bill attacks Jones, Sparrow, who wanted the heart for his own immortality, places his broken sabre in Will's hand and helps him stab Jones' heart, killing Jones. Jack and Elizabeth escape the Flying Dutchman as the crew carve out the dead Will's heart and places it into the Dead Man's Chest; the ship disappears into the whirlpool. Beckett, never intending to honor his agreement with Jack, moves to attack the Black Pearl. The Dutchman suddenly surfaces from the depths, with Will as the captain and the crewmen now human. Will and Sparrow aim the Flying Dutchman and the Black Pearl at the Endeavour, destroying it and killing Beckett. The armada retreats in disarray.
Although Will has been saved and the Dutchman crew has regained their humanity, he is bound to sail the sea as the Dutchman's captain. Will and Elizabeth have one day together where they consummate their marriage on an island. Will departs at sunset, but first gives Elizabeth the Dead Man's Chest for safekeeping. Shortly after, Barbossa again commandeers the Black Pearl, stranding Jack and Gibbs in Tortuga. Having anticipated Barbossa's deception, however, Sparrow has already removed the map's middle that leads to the Fountain of Youth.
In a post-credits scene set ten years later, Elizabeth and Will's nine-year old son stand atop a seacliff; a green flash fills the sky. The Flying Dutchman appears on the horizon with Will Turner aboard, sailing towards his family. In the DVD commentary, the screenwriters state that because Elizabeth remained faithful to Will for the interim 10 years, and he fulfilled his duty to ferry souls to the next world, he is freed from the Flying Dutchman.[1] This is contradicted by the "Pirates Secrets Revealed" leaflet insert in the DVD release, which states that Will is bound forever to the Flying Dutchman and may only step on land once every ten years.
source:Wikipedia