"Immortal Grand Prix" (IGPX) is set in the year 2048, where the world is captivated by a high-speed, futuristic racing sport known as the Immortal Grand Prix. The sport involves teams of three pilots maneuvering advanced mechs, called IG machines, on a high-speed track filled with obstacles and challenges. The races are intense, combining elements of strategy, teamwork, and combat, as pilots must not only outpace their opponents but also engage in tactical battles to secure victory.

The story centers around Team Satomi, a rookie team that unexpectedly earns a spot in the prestigious IG-1 league after a surprising victory in the lower-tier IG-2 league. The team consists of three young pilots: Takeshi Jin, a skilled but impulsive racer; Liz Ricarro, a determined and resourceful pilot; and Amy Stapleton, a calm and analytical strategist. They are supported by their coach, Andrei Rublev, and their mechanic, River Wheeler, who work tirelessly to keep their mechs in top condition.

As Team Satomi competes in the IG-1 league, they face off against seasoned teams with far more experience and resources. The series explores their growth as racers and as a team, highlighting their struggles to adapt to the higher level of competition. Takeshi, in particular, undergoes significant development, learning to balance his raw talent with discipline and teamwork. The team’s journey is marked by intense rivalries, particularly with Team Sledge Mamma, a dominant force in the league led by the enigmatic and highly skilled pilot, Cunningham.

The narrative delves into the personal lives and motivations of the characters, revealing their backstories and the challenges they face outside the races. Takeshi’s determination to prove himself, Liz’s drive to overcome her insecurities, and Amy’s quest to find her place in the sport add depth to the story. The series also explores the broader world of the IGPX, including the corporate sponsorships, media coverage, and the immense pressure placed on the pilots to perform.

Throughout the series, the races are depicted with high-energy action sequences, showcasing the speed and agility of the IG machines as well as the strategic maneuvers employed by the pilots. The stakes are high, with each race bringing Team Satomi closer to their ultimate goal of winning the championship, while also testing their resolve and unity as a team.

"Immortal Grand Prix" combines elements of sports, mecha, and drama, creating a compelling narrative that balances intense racing action with character-driven storytelling. The series provides a detailed look at the world of competitive racing, emphasizing the importance of teamwork, perseverance, and personal growth in the face of adversity.