Synopsis：Zack Turner, a world-class motorcycle tuner with an FIM Level 4 Global Master certification, walks out of his greedy Uncle Carl’s shop after being “paid” for three years of dividends with nothing but a box of frozen ribs. Backed by his loyal friends, he opens Zack Motorcycle Workshop in a rundown warehouse in Los Angeles. With his uncanny ability to diagnose engines by sound and his razor‑sharp tuning skills, he quickly earns a flood of clients, from champion racer Madison and wealthy bike lover Scarlett to viral blogger Kayla. But rival tycoon Victor and scheming Uncle Carl team up to sabotage him with cut supplies, false charges, arson, and smear campaigns. Even so, Zack refuses to bow, relying on genuine partners and unmatched craftsmanship as he fights back, builds a trusted racing‑tuning brand, and rises against every underhanded enemy.