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Aiya suffers a severe insomnia condition and dream-reality confusion due to a tragic past. To end this, she has to go back to where it all starts.

Aiya is warned not to go back but she is determined to dig up the past. She arrives at the island to meet with old friends who are unhappy to see her.

Aiya unknowingly walks into a murder scene that she mistakes to be a nightmare. When it's proved to be real, her friends agree to help find the truth.

Aiya and Faye reconcile over a heartfelt conversation. Win finds an old diary link to Aiya's mom while Faye also finds more clues about a riddle.

Aiya begs Sakka to tell stories about her mom but his wife intervenes. Suspicion grows while Aiya starts to remember something about the monk.

The monk finally shares his stories but it may not be the whole truth. Aiya's friends who wanted to help initially try to distract her from the case.

Aiya finds obstacles at every turn. People involved in the original case try to discourage Aiya while her friends start to question her memory.

A shocking secret is revealed. Aiya can't be sure of her friends or foes anymore. Win, Mo and Aiya go to the library to find the answer to that riddle.

Tragedy strikes. Aiya decides to leave the island after her quest for truth takes a turn for worse. Win and Faye grow suspicious of their parents.

Aiya's life is hanging by a thread while none of her friends can find her. Tatiya is accused of a crime and Sua receives a shocking information.

Aiya is sent to a hospital after a bad accident. Desperate Witsanu tries to buy more time and promises Aiya that he will tell her everything.

Witsanu finally reveals the truth and admits the attempt to mess up Aiya's memory about that fateful night. Sua and Mo uncover a shocking secret.

Aiya and Win make sure Witsanu pays for all the crimes he has done. Feeling guilty, Faye's mom writes a letter to confess the truth about Aiya's mom.