![The Witness](https://image.tmdb.org/t/p/w185/7XuMlSJxU18VZdArqADZf8FkM9i.jpg)
Kate and Will Spicer’s brother, Tom, has Fragile X Syndrome, the most common form of inherited learning disability. He is also a massive fan of Lars Ulrich from Metallica. They made a promise to Tom that they would get him to meet Lars. Tom’s dream is their promise. Together they went on a Mission to Lars.