Shelly is looking for an unusual flowerpot and Jack has a brilliant idea which involves a hermit crab's hunt for a new home.

Jack is trying to have a kip on the Rainbow but he keeps getting interrupted by Ernie and Sam who think Jack is turning into Grandpa Pops. Jack tells the story of Grandpa Pops, the oldest sailor in the world.

Sam is trying to clear the seaweed off the beach and Jack remembers a very bumpy day when the sea was covered in seaweed.

Miss Bowline-Hitch is returning all the things she's borrowed but now she's lost her purse. Jack is reminded of the time that Pearl the mermaid lost something precious.

Salty doesn't want her blanket to be cleaned, but while Emily is washing it Jack tells Salty the story of the underwater tug of war.

Ernie gives Jack a new lightbulb for his ship's lamp. That reminds Jack of a stormy voyage he and Salty once had and the light they needed to get home safely.