Bitter Feast

Bitter Feast is a 5e-compatible adventure for 20th-level characters. It focuses on role-playing and storytelling. The heroes are invited to the hall of King Kark to celebrate the Winter Solstice and, secretly, the winter of his own life. The journey there is set on a ship in a frigid ocean where the party can fill the space with tales of their past adventures, from times when their power was not so great. Suddenly they find themselves beset by a Kraken, smashing their boat and threatening their lives before skulking back into the deep. It is in this state that they meet the first guest of King Kark, Ardur Albain and his eleven knights. - from the publisher's blurb