The studio described the movie in a press release "as an iconoclastic take on the classic Excalibur myth, tracing Arthur's journey from the streets to the throne."
"When the child Arthur's father is murdered, Vortigern, Arthur's uncle, seizes the crown. Robbed of his birthright and with no idea who he truly is, Arthur comes up the hard way in the back alleys of the city. But once he pulls the sword from the stone, his life is turned upside down and he is forced to acknowledge his true legacy... whether he likes it or not," the synopsis said.
The 45-second clip has already gotten nearly 400,000 views since it was released Sunday. The trailer shows characters diving off of a cliff, fist fighting and riding horses, as well as armies clashing.