A meticulous and reclusive schoolteacher, James Anders, is nearing retirement in Rio de Janeiro and devises an intricate plan to execute the perfect heist. His target is a diamond vault located within a Brazilian jewelry company during Carnival, when the city will be at its most chaotic. To carry out this audacious scheme, Anders enlists the help of four diverse specialists: an electronics expert, a sleeping gas specialist, a master thief, and a seductive con artist. Each expert is essential to bypassing the sophisticated security system known as "Grand Slam 70," an impenetrable mechanism protecting the diamonds.

The plan involves impeccable timing, precision, and cooperation among the crew. As Carnival explodes with noise and color outside, the team must navigate through a labyrinth of distractions and obstacles inside. Tensions rise as trust diminishes, with hidden motives and personal agendas threatening to derail their efforts. As the intricate plot unfolds with meticulous detail in the first half, each participant’s unique skill becomes apparent in their endeavor to defeat the state-of-the-art security system surrounding their coveted prize. Their execution hinges on flawless teamwork and cunning deception, while avoiding discovery by both authorities and potential interlopers who might disrupt their elaborate plans. With every second critical, Anders's dream teeters on a razor’s edge between success and catastrophe.