In the Season 20 premiere, King Crab's return ignites a derby-style race. After losing the Saga, Jake joins Sig as co-captain. A serious hip injury tests Sophia. A fire on the Wizard traps Keith's deckhand below deck. Wild Bill faces his hardest test yet.

After leaving Sig's boat, Jake has a lot to prove on the massive Titan Explorer. Sig and Johnathan jockey to get ahead of a migrating king crab hoard in an underwater canyon. Rick faces Keith's wrath when his captain-in-training launches a rogue set.