在这部少年圆桌骑士家庭/冒险/奇幻片中,Alex和伙伴们的骑士游戏出乎意料地变成了一场真正的冒险，Alex在一处林中空地发现了亚瑟王的石中剑，还有魔法师梅林。石中剑有着神奇的力量，但是如果滥用就会消失，当Alex终于明白这一点的时候，他的小伙伴们正急需他的帮助，Alex必须尽快证明自己，恢复魔力……
Eleven-year-old Alex and his fellow homemade heroes are having a backyard blast. Battles rage, knights fight and damsels distress in a cardboard Camelot of dirt-bike steeds, aluminum foil sabres and plastic armor. The summer fun and fantasy soon become a marvelous, mystical reality with the touch of a sword. Malcolm McDowell, Michael Ironside and bright newcomer Johnny Morina star in a modern-day adventure filled with medieval magic. One fateful afternoon, Alex comes across a sword sunk in stone - King Arthur's legendary Excalibur! The sword holds untold powers of strength, magic and wisdom. With one motion, Alex frees the sword, Merlin the Magician appears, and Alex discovers the awesome power he'd always dreamed about. But to misuse Excalibur is to lose Excalibur... as Alex soon discovers. Now with Merlin vanished, Alex must prove himself worthy of the sword to bring back the magic. He'd better act fast - his friends need his power now more than ever!
