Watch Sun Children for Free: How to Stream the Movie Online at 123Movies. . The story of 12-year-old Ali and his three friends. Together they work hard to survive and support their families, doing small jobs in a garage and committing petty crimes to make fast money. In a turn of events that seems miraculous, Ali is entrusted to find hidden treasure underground. He recruits his gang, but first, to gain access to the tunnel, the children must enroll at the Sun School, a charitable institution that tries to educate street kids and child laborers, close to where the treasure is located.