The video discusses the idea that plants can communicate through energy fluctuations detected by sensitive electronic devices. The experiment conducted by Dorothy Retallic shows that plants respond differently to semi-classical music and hard rock, with the former causing them to lean towards the speaker and the latter leading to their shrinkage and death. The video also explores the possibility of plants having perceptions similar to human senses and responding to certain sounds. However, the video is not related to Bigfoot or its sightings.