In trying to create the most destructive weapons, humanity finally surpasses itself. Success ends in global catastrophe. The continents are engulfed by an earthquake, and the world is now ruled by Tone - a sound that brings death to all living things. Most of the Earth's population died, and those who remained were destined to live in Eternal Silence. Having lost their names, Mama's family seeks salvation in a house on the shallows. What do you have to sacrifice to protect those you love? What is Mom willing to give to save her family? Can her love delay death?