Gyllenhaal and Sarsgaard, along with Ted Danson, Mary Steenburgen, Jamie Lee Curtis, Amy Brenneman, and Dominique Dauwe served as executive producers.
As the camp season comes to an end, he and his girlfriend, Sage, bid each other farewell, but not before she gives him sunflower seeds to plant in a special place.
Sage is constantly on the move with her two mothers, Kate and Gillian, who work as drug dealers selling medicinal marijuana.
After her family's trailer breaks down when they head for a new spot to sell marijuana, Sage senses a golden opportunity to get an education at Mount Abe High School.
Unfortunately, Beth, the conniving captain of the cheerleading squad, hears of Sage's arrival after trying to seduce Tony to become her Homecoming King.
Outside the gym, Beth blackmails Tony to join her for Homecoming, threatening to put photos of him dancing on blast if he doesn't comply.
Later, Tony confesses to Sage that he was lying to her to get through the summer to cope with his reputation and he has to win Homecoming, which his school hasn't done in twenty-five years.
Just when it seems that the Mount Abe Eagles are losing, Tony arrives in time to pull off the dance he and Sage were working on before reconciling with his coach and winning the game.
[7] Calum Marsh of The New York Times selected the film as a Critic's Pick and wrote, "This is the kind of movie that vibrates with the energy of the people who made it, whose enthusiasm radiates from the screen.
"[8] Leslie Felperin of The Hollywood Reporter also gave the film a positive review and wrote, "...it's hard not to get swept up in the cast and crew's joyful insouciance.
"[2] Joe Leydon of Variety gave the film a positive review, calling it "an irresistibly appealing musical comedy brimming with inclusivity and exuberance.
[10] Kristen Lopez of IndieWire graded the film a B and wrote, "By not acknowledging differences, Best Summer Ever takes a generic premise and makes it feel spunky and fresh.