The story arc begins in Kidapawan City, North Cotabato, which sits at the foot of Mount Apo, the highest mountain peak in the Philippines. Staff monitoring the volcano are alarmed when they feel tremors shaking the station. Thinking that Mount Apo is about to erupt, they report to their superior who reassures them, saying that the tremors they are experiencing are caused by the residents of Pugad Baboy, who are on a hiking trip up the mountain.