Keith watches from the fish 'n chip shop window as his miserable, arguing parents leave, bickering as they drive away. Keith embarks on a mission to cheer up his parents, first deciding to paint the shop Tropical Mango to cheer, then buying a brilliantly coloured tropical fish.

Keith lies awake as his parents, Vin and Marge argue. Keith knows unless he does something drastic to improve their situation, his parents will split up. Keith must find out where the best fish comes from. The only one who will come near him on the bus is Ali as he has a cold and can't smell Keith's fish.

Vin and Marge say no to Australia, but take Keith and Dennis to the beach. Keith begins to advertise the chip shop, and Dennis goes overboard — attached to his trolley.

The Shipleys reach Orchid Cove but Keith soon realises that paradise is not without its problems when he has close encounters with a variety of creatures, including a deadly jellyfish.

Keith's dad decides it's high time he made the effort to find a job but in a small town like Orchid Cove, there's little on offer.

Keith spots the perfect place to set up a new shop and is determined to prove to his father the viability of a new fish 'n chip shop in Orchid Cove.

The bank refuses to loan Vin the money to buy equipment for the new shop. Undeterred, Keith and Tracy come to the rescue by taking matters into their own hands to outfit the shop themselves.

Vin and Keith devise a plan to compete with a new takeaway and end up turning the fish and chip shop into a drive-through restaurant. When Keith's idea fails, he decides to seek his fortune in the opal fields.

Keith sets out to find the Opal fields, but soon runs out of money for the bus. Determined not to give in, he continues his journey as a stowaway — with terrifying consequences.

Desperate to get to the Opal fields, Keith tells Col and Mick about his family's move to Australia.

Keith's parents travel to the opal fields to search for him. Keith finds a way into an opal mine.

Keith and Tracy get trapped in the opal mine when it caves in. Keith vows to end his crazy schemes when he realises they make his friends unhappy — until they return to Orchid Cove.