On 12 March 2018, US-Bangla Airlines Flight 211 skids off the runway, travels through the airport perimeter fence, and crashes into a football field during landing at Tribhuvan International Airport in Kathmandu, Nepal. 51 of the 71 people on board are killed in the accident.

On final approach through thick clouds, a commuter turboprop in New Zealand slams into hilly terrain. Rescuers struggle to locate the crash site while survivors' lives hang in the balance. And then it's up to investigators to figure out what went wrong. It's clear there was a problem with the plane's landing gear, but the search for an explanation inevitably leads them to the cockpit.