The video shows a person's hand holding a black marker and drawing on a white paper. The person is drawing a diagram that includes a horizontal line labeled "ACTIVATION" and a vertical line with a black arrow pointing downwards. Below the horizontal line, the person draws two yellow ovals and two brown rectangles, which are labeled as "PIO CARDO" and "ADAPTOR PROTEIN (ASC)" respectively. The person also writes "PIO CARDO" and "ADAPTOR PROTEIN (ASC)" next to the corresponding shapes. The diagram appears to be a representation of a scientific concept, possibly related to molecular biology or biochemistry.