Question: is percy in the ship of the dead

Answer: Yes, Magnus Chase receives an ocean survival lesson from Percy Jackson, a Greek demigod who is his cousin Annabeth Chase's boyfriend. The latter advises him, mentioning the possessiveness of sea gods over their weapons. Alex Fierro and Magnus travel to the Chase Mansion, where they recover notes scribbled by Randolph at different points of time. Alex feels that these notes hold the key to defeat Loki. After reaching Valhalla, Magnus summons a ship gifted by his father Frey. Mallory Keen, Halfborn Gunderson, Thomas Jefferson Jr., Samirah Al Abbas and Alex accompany Magnus, while they plan to pick Blitzen and Hearthstone along the way. The crew's talk is heard by the Nine Billow Maidens, who take them to the court of Aegir, where they discover Hearth and Blitz are held prisoner. Aegir's eldest daughter realizes Magnus' identity, from his previous encounter with her mother Ran. Magnus swears by his troth to defeat Loki in a flyting contest and to avenge Aegir's humiliation, but the crew is nevertheless attacked. They escape with the help of Magnus' grandfather Njord. Njord instructs them and tells Magnus that the only way to defeat Loki is by drinking Kvasir's mead. The crew continue on their journey, with Blitz and Hearth travelling separately to retrieve Bolverk's whetstone.