In the serene oasis of Murcia, a dysfunctional family embarks on their annual out-of-town trip to celebrate the twins, Pat (Julia Montes) and Max's (Enrique Gil)[3] 18th birthday.

Pat and Max are joined by their parents, Roy (Johnny Revilla) and Evelyn (Cherry Pie Picache),[3] their grandfather Pete (Jaime Fabregas), his caregiver Paloma (Janice de Belen), and their newly hired family driver, Toning (Nico Antonio).

[4] As they traverse the countryside's winding backroads, their joy is abruptly shattered when their van collides with an elderly woman on the road.

However, their ordeal takes a chilling turn when they discover they are trapped in a remote village led by the enigmatic Kapitan Tasyo and his family.

Pat's journey leads her to Dolfo's cave, where she tends to his wounds and learns of his tragic past, marred by the murderous Aswang that had annihilated his family.

Meanwhile, Max and the search party, including Tasyo, venture into the forest, where they encounter a terrorized mad man who warns them of an Aswang killing his companions.

As Pat delves deeper into Dolfo's past, she discoverers the gruesome truth about the aswang that has plagued the area every year at this time.

In a shocking revelation, Tasio and his hunting party come upon the cadaver remains of Lolo Pepe and realize the family they gave safe refuge to, are Aswangs.

A year later, the twins prepare for another annual trip to the province, this time accompanied by Roy's brother, as they continue to navigate their eerie and enigmatic legacy.

[3] Phillip Cu Unjieng of ABS-CBN News noted that the film is director Lawrence Fajardo's first attempt in working on a mainstream movie.