In the summer of 1981, Camp Firewood opens its gates for a tumultuous first day. Arriving campers and counselors are full of anticipation, hiding chaotic secrets and fervent desires. Camp director Mitch desperately seeks a piano player to salvage the impending talent show, eventually enlisting an eccentric veteran, while counselor Coop battles unrequited love for fellow counselor Katie, who is tragically dating the arrogant, motorcycle-riding Blake. Meanwhile, Coop finds unexpected solace and mutual attraction with Donna, a fellow outcast. Elsewhere, secretive government operatives, led by the ruthless Colonel Masterson, use an abandoned cabin on camp grounds to hide a massive, toxic sludge barrel, setting up an impending
environmental catastrophe.As the sun sets on the first day, the camp’s eccentricities spiral wildly. Jonas, a mysterious founder, returns to expose dark corporate secrets regarding the camp’s true ownership, sparking a paranoid investigation by counselor Andy and art teacher Susie. Susie and her rival, Gail, engage in an escalating psychological war over the camp’s theatrical production, culminating in sabotage and deeply personal betrayals. Simultaneously, the lovable, heavy-set counselor McKinley and resident heartthrob Ben secretly begin an intense, forbidden romance, testing the boundaries of 1980s societal norms within the camp's idyllic bubble.Romantic tensions reach a fever pitch during the evening’s events. Coop finally confesses his feelings to Katie, only to face
public humiliation, pushing him deeper into the comforting arms of Donna. However, Donna has her own mysterious agenda tied to the camp's secret past. In the woods, the radioactive sludge begins leaking, mutating local wildlife and threatening the safety of everyone. Unaware of the toxic danger beneath their feet, the counselors and campers continue to party, engage in illicit trysts, and rehearse for the talent show. The night ends in a haze of teenage angst, illicit substances, and bizarre encounters, including a magical talking can of mixed vegetables that offers existential wisdom to an overwhelmed chef.By dawn, the stage is set for a catastrophic confrontation. The government plots to destroy Camp Firewood to cover up their toxic waste dumping, while the counselors prepare for the talent show, blissfully ignorant that their lives—and the entire camp—are in mortal peril. Friendships are tested, secret identities are revealed, and romantic triangles threaten to shatter the fragile social ecosystem of Camp Firewood. As the curtain rises on the first official day of activities, everyone must fight for their survival, their dreams, and their right to have the ultimate summer experience, unaware that the clock is ticking down to an explosive, sludge-fueled finale that will change their lives forever.