In My Partner, two high school seniors in rural West Maui live in different worlds … but soon learn they aren't so different after all. Pili (Dudoit), an extroverted Hawaiian jock, and Edmar (Muñoz), a high-achieving, introverted Filipino gamer, are caught up in a rivalry between opposing senior class friend groups at Lahainaluna High School.
The conflict comes to a head when Edmar's group catches Pili's group in the act of overfishing a native species in a restored fresh-water stream. Things heat up further when Pili and Edmar's social studies teacher assigns the boys to work on their semester project together.
Despite protests and forced to work together, Pili and Edmar slowly learn that, despite appearances, they and their cultures have much in common, becoming closer as they spend time together—Pili learning about Filipino immigrants to Hawai'i and Edmar learning about Hawaiian culture and history. But things swirl out of control when their friends get into a battle.