The brother who is a siscon would take videos of his teasing and pranking of his sister and upload them to a video sharing site. His sister, who loves her brother, doesn't seem to mind. The man asked his sister for help in increasing the number of views. At first it was only supposed to be a masturbation video, but the content gradually escalated... and finally he invited his brother's friend over for a creampie threesome! It's a record of a twisted brother-sister love.