As the threat of foreclosure looms over their homes in the "Goon Docks" area of Astoria, a close-knit group of young friends, self-titled the Goonies, come together for one last adventure before their neighborhood is irrevocably transformed. The main group comprises Mikey Walsh, Data Wang, Clark "Mouth" Devereaux, and Lawrence "Chunk" Cohen. They converge in Mikey's attic, where they uncover a 1632 doubloon along with an ancient treasure map thought to lead to the legendary hoard of the infamous pirate One-Eyed Willy. For these brave kids, the treasure signifies their last chance to save their homes from a growing country club's expansion.
As tension escalates, Mikey's older brother Brandon "Brand" Walsh emerges as a significant hurdle. In response, the Goonies concoct a clever plan to outwit him and secure entry to a deserted restaurant on the coast, which is marked on the treasure map. Brand unwittingly aligns himself with Andrea "Andy" Carmichael, a cheerleader with a crush on Mikey, and her tomboyish best friend Stephanie "Stef" Steinbrenner.
Their quest leads them to a secret lair belonging to the notorious Fratelli crime family—the cunning Francis, the dim-witted Jake, and their shrewd mother. Inside, they stumble upon a concealed tunnel hidden in the basement. Chunk inadvertently becomes separated from the others, only to find himself ensnared in a freezer, leading him to signal a passing vehicle, which belongs to none other than the Fratellis. Little does he realize, this critical error results in his capture alongside Sloth, the family's immense and deformed son.
Navigating the perilous corridors of the tunnel, the Goonies dodge treacherous traps while staying one step ahead of the relentless Fratellis. Their ultimate destination is a hidden grotto where Willy's famed pirate ship, the "Inferno", is docked. The friends are spellbound by the dazzling treasure surrounding them and begin to collect gold. However, Mikey sensibly advises against looting without first showing respect to Willy's skeleton and the scales that symbolize his legacy.
As the Goonies plot their daring escape, the Fratellis spring from the shadows, snatching their hard-earned treasure and binding the young adventurers. The group’s fates hang in the balance as they are forced toward the perilous edge of a plank. Just when hope seems lost, Chunk and Sloth's timely intervention turns the tide, providing them with a crucial break. Brand courageously saves Andy from plummeting into the turbulent waters, which culminates in a touching kiss between the two.
The Fratellis, blinded by their insatiable greed, scramble to seize every ounce of treasure, including what lies on Willy's scales—an impulsive decision that inadvertently activates one final booby trap. The cavern rumbles ominously, at risk of consuming the Goonies and their adversaries alike. It takes a herculean effort from Sloth to help the group escape the looming catastrophe.
Once the chaos subsides, the Goonies find themselves back on the sunlit beach of Astoria, joyfully reuniting with their families amidst tears and joyful embraces. In stark contrast, the Fratellis face the grim grip of justice as they are taken into custody. Chunk's empathy for Sloth leads to the gentle giant finding solace in a new home with his friend. Just as Mikey's father stands ready to sign away their beloved residence, their devoted housekeeper, Rosalita, uncovers a hidden stash of jewels nestled within Mikey's cherished marble collection, ensuring the Goonies' escape from impending foreclosure.
As the community gathers to hear the remarkable stories of the Goonies' escapades, all eyes turn to the horizon. In the distance, the "Inferno," now liberated from its ancient slumber, sails majestically once more, symbolizing the unwavering spirit of this group of audacious young adventurers.
