Finally, Masha has found happiness - she is going to marry the person she loves. But dreams of an imminent wedding and quiet family joys go to hell. By the will of fate and due to the irrepressible nature of her, she finds herself in a secret place - the Swamp Zone, where everything is subject to the laws of a certain mysterious Aristarchus, who rules this mini-world, conducting merciless experiments on people and nature. Kidnapping, slavery, forced sterilization of healthy women and men, sale of vital human organs abroad. But among these horrors there is a place for friendship, love and even a miracle - but will Masha be able to figure it all out and understand where the true friends are and where the enemies are? .