After her beloved mentor, Ed Heschen, dies in a car crash, Sierra Bauer, aircraft mechanic, returns to her alma mater to eulogize him. Ed and his family were her lifeline six years ago after she survived a violent attack.

Though local law enforcement assures her that Ed's death was an accident, Sierra is certain it was something more when she finds a warning hacked onto his plane and learns someone threatened him before he died.

When Ed's widow receives a package Ed sent to himself after his death, more questions arise. What was he hiding from everyone? Did those secrets cost him his life?

As Sierra and her boyfriend Quinn Moore, a detective out of his jurisdiction, get closer to the truth, the more someone tries to keep those secrets buried, putting Ed's family in jeopardy.

Sierra and Quinn must protect Ed's family and uncover the truth before his deadly secrets silence them forever.