The summary is:
The video is about a lie detector challenge where the host, Lyosha, tries to guess who is his masked friend based on their answers to random questions. The masked friend can only answer yes or no with hand gestures, and the detector will show if they are lying or not. Lyosha has to guess from a pool of his friends and acquaintances, some of whom are bloggers. He also promotes his Instagram account and asks for likes to make a second part of the video. He eventually guesses that his friend is Stas, who cheated a little on some questions. They also come up with an idea for a new challenge where they have to guess one of three people. They end the video by thanking the viewers and asking them to subscribe and comment.
Here are the key facts extracted from the text:
1. Lyosha Maysaik arranged a Lie Detector game with friends under masks.
2. The participants are in another room watching on a special screen and commenting.
3. The game involves random questions which Lyosha has to guess who is answering.
4. The detectorist's identity is hidden due to their work for a special organization.
5. The questions range from favorite color to activities done the previous night.
6. The participants answer without voice to prevent Lyosha from recognizing them.
7. A computer reads the body impulses of the participants to determine if they lie.
8. Lyosha guesses who the participant is based on their reactions to the questions.
9. The game includes various rounds and assumptions about who the participants might be.
10. Participants react to questions about personal topics like visiting erotic sites or stealing.
Please note that these are factual statements extracted from the provided text and do not include any opinions or subjective interpretations.