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Taylor Young goes on the adventure of a lifetime after the disappearance of her uncle. Her friends help her get to the bottom of the secrets that Rock Island hides.
Taylor returns from a trip only to find an entire coconut festival missing! The friends must work together to figure out what's happened. (S3, ep 1)
The friends receive a coded message, and discover creepy echo caves, where they're haunted by their own voices. (S3, ep 2)
The teens find Uncle Charlie's cassette tape about seeking a crystal in a Hidden Crypt... but the tape gets damaged before they hear the end. (S3, ep 3)
On Solstice night, the gang search for a witch's amulet that can lift the veil between worlds. They don't expect the witch to follow them home and trap them in Lila's house. (S3, ep 4)
Lila wishes for a simple life, only to get stuck inside a painting! The others find a strange boy in her place, whom they must convince to return to the painting. (S3, ep 5)
On Rock Island Challenge day, Meesha's competitive cousin visits and signs up to race against her. Even worse, Meesha and Ellis get stuck together! (S3, ep 6)
Lila's sad on her birthday, so Ellis reveals his new AI creation to cheer her up. It leads them all over the island, as they test it and try to open a portal. (S3, ep 7)
Lila wakes on the edge of a cliff the day the new head of the Institute starts. Worried about her extreme sleepwalking, Meesha follows Lila's latest expedition. (S3, ep 8)
Lila's keen to impress in her interview for Institute Teen Ambassador, then develops mind control powers and keeps accidentally causing chaos. (S3, ep 9)
The gang visit a contamination zone and discover an amazing substance. They think it has incredible potential and want to see if it can unlock a doorway to the other side. (S3, ep 10)
When Ellis wakes up with split personalities, his friends must wrangle his different sides to break into the Institute and retrieve something important he left behind. (S3, ep 11)
Nori's excited to take April Shon on a possible date, but might have to cancel when he becomes electric. Those aren't the kind of sparks he wants between them! (S3, ep 12)
A woman arrives from the mainland asking to speak with Taylor, and only Taylor, urgently. When some of the gang act strangely, they must protect each other and the Queen. (S3, ep 13)
The day of Meesha's students' karate comp, Nori tries an experiment and accidentally shrinks Meesha! Meesha wonders if her size provides a unique opportunity. (S3, ep 14)
The gang find an ally of theirs apparently crystallised in her home. They realise the crystallisation is contagious, and spreading to them! (S3, ep 15)
Nori already feels guilty about lying about the island's mysteries. Silas returns from a shipwreck dive and a centuries-old pirate takes control of his body, out for revenge. (S3, ep 16)
At the mine, workers see a ghostly hand coming out of the rock like someone is trying to break through. As more encounters occur, the gang investigate the pattern. (S3, ep 17)
Emily and Sunny find a sap that makes them act like their seven-year-old selves. Ellis tries to protect Emily from embarrassing herself, and the others seek an antidote. (S3, ep 18)
With the island's growing environmental instability, the teens are desperate to restore balance. They need to open a portal today! Maybe some new helpers will help. (S3, ep 19)
As the island speeds towards environmental collapse, the teens need to fix things fast by executing the plan to end all plans - an elaborate heist. (S3, ep 20)