Okay kiddo, so have you ever watched a movie or a TV show that tells a true story or event, but it also has actors pretending to be the real people? That's called a docufiction.
It's like watching a documentary - which is a video telling you true facts and information about something - but there's a little bit of made-up stuff added to make it more entertaining or easier to understand.
Sometimes, a docufiction is also called a "mockumentary." That's when the made-up parts are included to make things funny or to poke fun at a serious topic.
Basically, docufiction tries to blend facts and fiction together, so you can learn something new or be entertained at the same time. It's like someone is telling you a story that's partly true, but also partly made up.