8 episodesFirst aired 22 June 2023
E1Jun 202326m
A mysterious castaway appears while Charlie, Mike and their dads search the ocean for mythical creatures, throwing all their plans into chaos.
E2Jun 202322m
As they adjust to wild new surroundings, Mike and Charlie realize that getting to shore was the easy part. Cap encounters another explorer.
E3Jun 202322m
On the run from a terrifying predator, the boys glimpse an unbelievable sight. Irene leads her team deeper into the island. Mike makes a confession.
E4Jun 202323m
Annie and Dog stage a subterranean rescue operation. Irene gets better acquainted with the island's wildlife. Cap explains an intriguing theory.
E5Jun 202321m
A risky plan pays off, leading to a reunion — and new revelations. Stuck in a precarious situation, Charlie and Dog form an uneasy alliance.
E6Jun 202322m
Mike's injury catches up with him, while Annie and Irene unpack their complicated histories. Dog and Charlie's journey across the island continues.
E7Jun 202324m
Years in the past, Kong roams the island with a beloved human friend. But when his temper gets the better of him, the consequences could be dire.
E8Jun 202327m
Charlie proposes a daring plan to defeat the sea monster and save Mike's life. But it will take all his courage — and Kong's strength — to pull it off.