A group of friends, including Alex, Nikita, and Ksyusha, go on an adventure in a forest, playing and arguing with each other. They come across an abandoned building and decide to explore it, but soon realize they are lost. As they navigate the building, they start to get scared, especially when they hear strange noises and see a mysterious figure. They try to find Ksyusha, who has gone missing, and eventually discover that the building is an abandoned children's camp. As they continue to explore, they find clues and evidence, and eventually, Alex finds Ksyusha, who is safe. However, they still can't find a way out of the forest, and the group starts to get frustrated and scared.
Here are the key facts extracted from the text:
1. A group of friends, including Ksyusha, Alex, and Nikita, are on an adventure.
2. They are in a forest near a beach.
3. They come across an abandoned building, which they initially think is a school canteen but later realize is an abandoned children's camp.
4. The group gets lost in the forest and cannot find their way back to the beach.
5. They discover a diary in the abandoned camp, which mentions a girl and a pistol.
6. The group decides to split up and search for a way out, with Alex and Nikita taking different routes.
7. Nikita finds evidence of a local forester or hooligan who has been living in the abandoned camp.
8. The group eventually reunites and decides to follow Nikita's lead to find a way out of the forest.
9. Nikita had scattered "Leskov" ( likely a breadcrumb or marker) throughout the forest, which they use to navigate their way back.
10. The group is relieved to have found a way out of the forest, but it is not clear if they are back at the beach or in a different location.