After a company retreat in a remote country house, senior employees of Alemany Cosmetics return with a dark secret. They've each received an anonymous, menacing email of only two words: 'never forget.' What's worse, the message is accompanied by a nightmarish photo attachment showing the bodies of dogs hung to death from a tree near the very same farm estate they just visited. When they begin killing themselves, one by one, the connection between the shocking photos and the suicides baffles Barcelona law enforcement and corporate think tanks alike, threatening a terrifying end for everyone involved