A modest employee of the Kangaroo advertising agency, Sonechka Oreshkina, was incredibly lucky - she was offered to participate in a training organized for the company's top managers. Fate gave Sonya a chance to demonstrate to her superiors all her extraordinary qualities. And then it’s a stone’s throw to a promotion and salary increase. The training is held in a picturesque secluded place on the shore of a mountain lake. There is not even a cellular connection there, and the only way to get to civilization is by boat... But the boat is broken by someone, and the training participants, trapped, lose their composure. They have something to be nervous about: it is no longer clear whether anyone will be able to get out of here alive... It would be better for Sonya to refuse this trip!