Hao, with retrocognition, saves Sari from the wrath of Pocong Gundul, a malevolent sorcerer in ghost form, risking his life to stop its evil plans.

HAO possesses the ability of retrocognition, a capability to see events from the past. With this ability, Hao helps SARI, a high school student who was mysteriously abducted by a terrifying figure known as "Pocong Gundul," a bald-headed ghost. Together with his friend RIDA, Hao successfully rescues Sari, but his actions inadvertently anger the Pocong Gundul. Terror after terror threatens Hao's safety. Using his powers, he delves into the past of the Pocong Gundul and discovers that it was once a wicked human sorcerer named WALISDI. This malevolent individual had performed dangerous ancient rituals that transformed him into the Pocong Gundul. If left unchecked, the Pocong Gundul will continue to roam and claim more victims. Hence, Hao must do everything in his power to stop the evil plans of the Pocong Gundul, even if it means putting his life at stake.