After years of being paralyzed, Alison miraculously regains the ability to walk. Eager to share the news with her husband Neil, she instead stumbles upon him in bed with their nanny. It turns out that Neil's betrayal runs deeper than an affair—he's been the mastermind behind Alison's condition all along. Determined to take revenge, Alison crosses paths with Lucy, a woman trapped in an abusive marriage. As they find solace in each other's struggles, these two women, both suffocated by darkness, decide to be each other's beacon of hope.
