Two crashes five months apart, Lion Air Flight 610 off the coast of Indonesia in October 2018 and Ethiopian Airlines Flight 302 in March 2019, killed 346 people and grounded the entire 737 MAX fleet. The film traces how Boeing's new flight-control software, MCAS, ended up steering both planes into the ground based on a single faulty sensor reading, and how engineers, pilots, and regulators missed or dismissed the warning signs. Interviews with aviation experts, former employees, and crash investigators lay out the commercial pressure Boeing faced from Airbus, the rushed certification process that let the company self-certify parts of the new jet, and the internal messages showing staff knew about problems with the simulator training before the second crash happened. Families of victims describe the aftermath and the fight for accountability that followed. The documentary moves between cockpit voice recorder transcripts, congressional hearings, and factory floor footage to build a picture of how corporate assumptions about pilot response time turned into a fatal design flaw.