Threatened by a doctor's kindness toward Tammy, Mark tries to get her an exotic animal, only to have his face ripped off by the newly purchased chimpanzee. Meanwhile, Hank bonds with the chimpanzee via its bluetooth, and David's dog saves David and Mernft Man from a pet snake.

When David, Andrea, Mark, and Tammy go on a cruise together, David and Andrea unexpectedly rekindle their romance. Mark's preoccupation with reeling in a big fish to outcompete Steve DelVecchio leads to him catching a whale that jeopardizes the safety of the entire cruise. Meanwhile, Hank goes on a date with a mermaid that goes awry when she reveals her distaste for hot dogs.

When Tammy is upset that an elite country club only takes men, Mark joins it to supposedly change things from within; Tammy's passion for the club infuriates the owner's wife, Ellen; Mark's entry into the club ruins the natural order.

Mark puts his piloting skills to the test.