Juan, a teenage boy living in a small Philippine town, sees an opportunity to make money when he finds his broken mother's cooking pot. He grinds the pot into a fine powder, packages it in small plastic pouches labeled as "Flea Killer", and sells it around town. However, the product does not actually kill fleas as the townspeople use it. When confronted, Juan claims they used it incorrectly by not opening individual fleas' eyes and placing the powder directly in them. The townspeople realize Juan tricked them for money, earning him the nickname "Naughty Juan".