From and Out of the Ship

"From and Out of the Ship" is the fifth episode of The Life of SpongeBob SquarePants ' first season. It originally aired on April 6, 2015.

Plot
Fred, Sadie, and Debbie Rechid pay a visit to their friend Nat Peterson at the Bikini Bottom General Hospital. Fred excitedly informs Nat that he has held a charity ball, raising enough money "from our fellow Bikini Bottomites" to pay his hospital bills. Not long after that, Dr. Gustav Savalas enters the room and, after announcing that "some recalculations have been done", gives Nat the new hospital bills, charging him with even more money. Nat suffers a heart attack and falls unconscious. As Fred, Sadie, and Debbie hastily remove themselves from the room, a disappointed Fred reveals that he doesn't have enough money from the ball to pay the new bills.

Meanwhile, SpongeBob, Squidward, Mr. Krabs, and Gary are taken to their cell deep inside the hull of the USS Saratoga; Ribert informs them that they will be taken before their father in a few hours, along with the inhabitant of the adjacent cell. Through a small hole, SpongeBob peers into the adjacent cell; he recognizes the person there as Octavius Rex, the nerd who once dated Krabs' daughter Pearl (Octavius makes an appearance in the original series' season 1 episode "The Chaperone",). Rex states that their captors are a fierce group of robbers, known as the Ramshackle Fighters; they intend to force Rex to reveal the secrets behind his latest inventions for the Bikini Bottom Police Department, after which they will raid nearby towns for materials required to build the weapons that they will use to invade Atlantis. Krabs notices that SpongeBob has a mobile phone in his pocket and has him contact Pearl, Krabs' daughter; Pearl, while not exactly pleased at hearing Rex's name again, proceeds to contact the police, giving them the names of all the captives and their locations.