Taylor meets a gold prospector with half of a ‘treasure' map of Rock Island. With Uncle Charlie's journal warning that Rock Island's gold must never be removed, Taylor's determined to protect it, but an aggressive swarm of bees disrupt her plans.

The gang emerge from a cave to find themselves in an alternate reality… where Uncle Charlie never went missing! But it soon becomes clear that their presence is affecting the island and in order to save it, they must return to their own reality.

A tremor on Rock Island beach uncovers a mysterious portal to the lost civilisation of Atlantis! Unfortunately, Raquel finds the portal before our gang and matters are complicated by the arrival of a mysterious girl who asks out Ellis on a date.