Watch The Kid Who Would Be King (2019) HD Full Movie Free on SolarMovie. Watch The Kid Who Would Be King (2019) online free. Alex, a 12-year-old boy, and his friends fight an evil sorceress with the help of Excalibur, the swo...Alex, a 12-year-old boy, and his friends fight an evil sorceress with the help of Excalibur, the sword of King Arthur, in a bid to save the world from her atrocities.