A new girl named KT begins school, and Eddie recalls seeing her in a vision. A new teacher arrives and settles into the gatehouse. Victor searches for an important parcel. Eddie tries to learn more about KT.
Victor's furious when a parcel goes missing. He doesn't realise it's ended up in Amber's pile of birthday presents. Eddie demands that KT come clean about why she's really here.
Eddie and KT join forces to unlock the mystery of her key. Amber learns details about her bracelet from Alfie. Victor scrambles to find his lost bracelet. Eddie and KT realize Miss Denby also has a key.
Victor's under pressure to find his missing bracelet. Eddie and KT discover that Miss Denby has a key just like KT's - is there more to their new teacher than they first thought?
Amber is accepted to a fashion school in America. Fabian deciphers the bracelet's packaging. Eddie and KT seek info about Miss Denby. Jerome and Mara prepare for the business-studies competition.
Eddie and KT investigate Miss Denby, Patricia and Fabian suspect KT of working for Victor and Jerome and Mara take the business studies competition seriously and personally.
Victor steals Amber's bracelet and locks her in the tank room. Eddie and KT find more out about Miss Denby. After Amber is found, she demands that Sibuna be reformed.
KT and Eddie's suspicions about Miss Denby are confirmed, Jerome's sabotage of Mara's project backfires and Amber learns the adults are planning a mysterious ceremony.
Amber is found in the tank room; a photo of the real Miss Denby is uncovered; Amber shares what she heard the adults discussing; Victor believes he has his bracelet back.
Amber leaves, revealing what she heard in the Tank room and demanding that Sibuna is reformed – they have to stop the adults! Meanwhile Victor is delighted he finally has his bracelet – little knowing it's a fake!
The Sibunas discover the man in the tank is Robert Frobisher Smythe – what exactly are the adults plotting? Eddie resolves to reveal Denby's true identity. Meanwhile, Jerome tries to win Mara back.
The Sibunas find the real Miss Denby, who has some revelations for them… but will they get away without being caught? Jerome sets his sights on Willow. Joy boosts her confidence with a brand new look.
The Sibunas uncover the details of a secret ceremony; the gang tries to rescue Harriet Denby.. The Sibunas learn they must perform the ceremony themselves!
Jerome's double life catches up with him.The Sibunas discover a new room. Jerome is under hot water. Trudy confronts Sibuna.
The Sibunas begin the ceremony; Joy grants Willow a wish; Sibuna fails to wake the man in the tank and they are trapped in the crypt.
Patricia plans a rescue; Mara and Willow get closer.
Victor confiscates KT's key and when Jerome begs Patricia for a favour she strikes a deal - He has to get the key back from Victor! The Sibunas discover that the adults have special plans for the eclipse. How will they stop them?.
Victor is furiously searching for the bracelet. After overhearing a conversation between the Sibunas, Mr. Sweet learns that Eddie has the bracelet. Mr. Sweet plans to steal the real ceremonial bracelet by creating a diversion. Jerome worries that if Mara and Willow keep being roommates it will threaten his secret. Eddie goes to Mr. Sweet's office to find more about KT but finds something else instead. Eddie comes back to Anubis House with Jerome's, Joy's, Alfie's, & Patricia's files. In the files they learn that KT isn't the descendant but Jerome, Joy, Alfie, and Patricia are. Realizing this, they rush to the Gatehouse to warn the descendants but they are to late.
The Sibunas learn the history of the tank man. Joy finds Jerome's list of pros and cons of Mara and Willow.
Eddie, KT, and Fabian must get to their friends in time to stop the ceremony. Joy sends Mara and Willow an incriminating email.
Frobisher wakes up evil. Joy tells Willow and Mara about Jerome’s two-timing. Mr. Sweet is forced to take action against the Sibunas.
Eddie has a bad feeling. The Sibunas plant secret cameras in the gatehouse and hear a strange voice. Mara and Willow plot revenge against Jerome.
Jerome, Joy, Patricia, and Alfie begin to act strangely. Jerome believes he has been chosen for a talent competition. KT goes to the gatehouse alone.
The Sibunas find Frobisher. Jerome is humiliated during a singing competition. Victor visits the gatehouse.
Frobisher makes Victor evil and keeps his sinning soul in the sarcophagi. The Sibunas find another clue. Patricia and Eddie are trapped in Frobisher's tomb.
Joy agrees to Mara's plan to break Jerome's heart. Eddie escapes the crypt. Fabian helps KT work on the capsule by blocking out her senses.
A riddle leads the Sibuna to a secret room. Mara is devastated to learn she has inherited a dog. Denby drives a wedge between Eddie and Patricia.
Victor discovers the secret room and sets a booby trap. Miss Denby continues to meddle. Jerome ask Joy on a date.
Anubis House battle Isis House in a Dodgeball Tournament. Harriet Denby escapes from the gatehouse and KT discovers that there's an easier way into the secret room.
Joy and Jerome share a romantic moment during a very strange date. The Sibunas discover a phonograph in the secret room and it's the final straw for Patricia when she finds intimate messages on Eddie's laptop.
Eddie realizes there's a traitor amongst the Sibunas when the phonograph is destroyed, but who is it? Frobisher demands a new sinner for Ammut's collection and Mara has a new plan to shame Jerome.
Denby and Frobisher kidnap Willow but dismay at her inability to sin. Patricia plans to captures KT by offering to help clear her name. Jerome and Joy share a kiss - Mara's plan is backfiring?
KT’s hopes of proving her innocence disappear when Harriet is sectioned. The Sibunas search for the artefacts with the help of a family rhyme when the phonograph is mysteriously restored. Eddie faces the real Sibuna traitor.
Willow discovers she's related to Joy and saves the day when she inadvertently provides the clue to a missing artefact. KT decides to run away, leaving Victor without his precious sinner. Fabian learns the truth about Patricia.
When Fabian's trusting nature lands him in the hands of Frobisher, Ammut's collection is almost complete. Meanwhile, Eddie realises the Sibuna traitor is not KT and Jerome shocks Joy with a surprise ending to their play.
Mara is furious as a heartbroken Joy admits her feelings for Jerome. Eddie calls on Patricia's sister for help with the missing artefact clue and KT is torn as she realises she doesn't know who to trust.
Alfie convinces KT that he's not a sinner. They rescue Eddie from Team Evil's clutches – only for Alfie himself to be captured. Joy and Mara are forced to work together when they lose Willow's cherished pet hedgehog.
Eddie and KT find the final artefact and take it to the gatehouse to destroy Ammut – only to realise they have been tricked. An evil Alfie breaks Willow's heart and Joy and Mara bond while coming to her aid.
As Ammut begins to form, Frobisher demands KT's key – but where is it? Eddie and KT find it on Willow, and realise the purpose of the keys. Jerome explains his feelings to Joy in a letter. But Joy won't read it.
Harriet sacrifices herself as Eddie and KT finally unlock the portal to destroy Ammut and save them all. KT says an emotional goodbye to Frobisher. Joy and Jerome have Mara's blessing, and Alfie has a special gift for Willow.