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.

Mark puts his piloting skills to the test.

Mark throws his hat into the ring as an Ad Man after being shown up by a group of execs.

After feeling slighted by a Navy recruiter, Mark sets out to join an elite unit of the Marines, only to be thwarted by his inability to properly make a bed. David teams up with a Veteran, hoping to ghost write the next American Sniper and can no longer distinguish fantasy from reality as his subject reveals stories from his past that are stranger than fiction.