One night at 11:11 sharp, Galih (Rendy Kjaernet), an archaeological student who likes diving and photography, found the whereabouts of Dewi, her mother. Dewi disappeared when Galih was a child on a remote island called Tanjung Biru. Galih travels to the place with three friends, Ozan (Fauzan Smith), Vania (Twindy Rarasati) and Martin Bayu Anggara). During that dive, they find a ship wrecked on the sea floor. Inside the ship they find an ancient artifact that is a clue to look for Galih's mother, but the artifact also brought disaster. The disturbance after disturbance from the guardian ghost of Tanjung Biru hit the group.

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