Johnny and Scotty make friends with Sigmund, the friendly sea monster, who they meet on the beach. They try to protect Sigmund when they discover he is being hunted by Captain Barnabas.
EPISODE 1
Pilot
Johnny and Scotty befriend Sigmund, a sea monster, on the beach and bring him home to their clubhouse; Captain Barnabas is hunting Sigmund; Sigmund's brothers dislike humans.
EPISODE 2
Finding Sigmund
Sigmund and the kids set out to find one another; Sigmund's overprotective family and Captain Barnabus make things hard for Sigmund and the kids.
EPISODE 3
Dibs
Sigmund learns about calling dibs and mistakenly believes that he can claim anything he wants around town.
EPISODE 4
Robyn Has a Gift
Robyn gives her mother a birthday present made by Sigmund; Barnabus recruits Johnny to help him plan a birthday surprise for Maxine.
EPISODE 5
The Squid Stays in the Picture
After watching a monster movie, Johnny and Scotty decide to make a movie of their own with Sigmund; Robyn helps Maxine run a support group to cure Barnabus of his sea monster obsession.
EPISODE 6
Sigmund and the Sand Castle Contest
Sigmund volunteers to help Johnny and Robyn with the annual sand castle contest; Sigmund gets sick; Scotty brings a robotic vacuum to clean the cave.
Johnny Whitaker
Rip Taylor
Sparky Marcus
Margaret Hamilton
Mary Wickes
Fran Ryan
Pamelyn Ferdin
Billy Barty
Scott C. Kolden
Sid Krofft
Marty Krofft