After his family hits rock bottom, 18-year-old Liam visits his late Grandpa Robert’s neglected grave to say goodbye. While clearing moss from the tombstone, he discovers mysterious coordinates etched into the marble—just like the treasure hunts they once played. The trail leads him to a railway station locker, where he unlocks it using the model number of their first toy airplane: L-1717.
Inside, Liam finds $150,000 and a diary. The pages reveal a painful truth: years ago, Liam’s father David tried to sabotage his aviation dreams, mocking his passion and even smashing his toy plane. Worse, David orchestrated a robbery to steal the money Robert had saved for Liam’s future. But Robert never gave up. He worked tirelessly for over a decade, even after being diagnosed with terminal cancer, to rebuild the fund and hide it in the locker—leaving clues only Liam could follow.
Liam returns home, torn between helping his father and pursuing his dream. He offers David a deal: quit gambling and pay the mortgage, or lose everything. David agrees—but tries to deposit the money at a casino instead of a bank. Liam watches from across the street, revealing the trap. The money was fake. The real cash stays with Liam, who heads straight to the Aviation Academy, whispering, “I won’t let you down, Grandpa.”
