Four young siblings. An ancient evil that has been waiting billions of years for its opportunity to reign over the earth. Oscar, Esteban, Manny and Isabel are as different as brothers and sisters can be. They argue, and the brothers even fight, but their unquestioned love for each other is about to be tested in unimaginable ways. The Birdbox has finally been opened after many centuries. Can they work together to overcome the darkness housed in The Birdbox in time to save themselves and their family? In time to save humanity itself?