Gagamboy

Junie was demoted because his constant rivalry with fellow vendor Dodoy at the ice cream shop frustrated their manager. Despite Junie's years of effort, the manager decided to remove him from the front-facing role and reassign him to the warehouse as a guard after their feuding disrupted the workplace.

Earlier scenes showed Junie and Dodoy constantly clashing, which had been building tension with their manager.

During his night shift at the warehouse, Junie accidentally swallowed a spider that had been exposed to a chemical spill at the pharmaceutical lab. The chemical exposure from the spill gave the spider unusual properties, and when Junie swallowed it, he gained spider-inspired abilities including web-slinging, transforming him into Spiderboy.

After finishing his shift, Dodoy left a sandwich unprotected, and a cockroach that had been exposed to the same chemical spill crawled onto it. Dodoy ate the contaminated sandwich, which caused him to transform into a giant cockroach. He adopted the name Ipisman (Cockroachman) and hired henchmen to pursue his new criminal ambitions.

The same chemical spill that affected the spider also impacted the cockroach, creating parallel transformations for both rivals.

Ipisman kidnapped Liana to lure Spiderboy into his lair. Both Junie and Dodoy had been competing for Liana's affection even before their transformations. Dodoy, now driven by desperation and his darker nature as Ipisman, used her as bait to set a trap for Spiderboy, intending to kill him once and for all and settle their rivalry on his own terms.

Spiderboy confronted Ipisman in his lair where the trap had been set. During the climactic battle, the tide turned in Spiderboy's favor. The trap that Ipisman had set collapsed, and Spiderboy used his agility and web-slinging abilities to overcome the cockroach-powered villain. The confrontation ended with Ipisman being destroyed and his threat neutralized.

The exact cause of the chemical spill is not detailed in the story. What matters is that the pharmaceutical lab accident created a toxic substance that affected both a spider and a cockroach in the workplace. This accidental chemical exposure triggered the transformations of both Junie and Dodoy, turning them into opposing superhero and supervillain figures.

Unlike Junie, who used his powers heroically, Dodoy's transformation into Ipisman brought out his darker ambitions. His existing resentment from their rivalry, combined with his demotion and sense of grievance, twisted his character. With his new cockroach-powered strength, he chose to pursue criminal goals and eliminate Spiderboy rather than use his abilities responsibly.

Dodoy's competitive drive and jealousy toward Junie were evident even before their transformations.

The story keeps Junie's dual identity intact while maintaining his personal relationships. Liana remains at the center of his personal world throughout the film. While the specifics of whether she learns his secret are not fully detailed, the ending suggests she continues to be part of his life as he balances his ordinary days with his role as a protector.

At the end of the movie, Junie's life has been irrevocably changed by his transformation into a defender. After defeating Ipisman and ending the threat from his rival, Junie is left pondering how to balance his ordinary daily life with his newfound role as a protector. The ending is hopeful, with his future remaining uncertain but optimistic as he looks toward balancing both worlds.

The rivalry began as professional competition between ice cream vendors but escalated due to several factors: their manager's decision to demote both of them created shared resentment, they both pursued the same love interest Liana, and their chemical transformations gave them powers that intensified their conflict. What started as workplace competition became a life-or-battle between Spiderboy and Ipisman.

The early scenes established their constant feuding, which only grew more intense after their transformations.