一个运气不佳的自行车手迈尔斯某天偶然发现一只先进、机器、军用的机器狗A.X.L.,其心脏是真狗的心脏,其他部位装备新一代人工智能。迈尔斯和AXL在日常交往中逐渐增进感情,而无赖军事科学家要不顾一切将AXL捉回,迈尔斯与他的梦中情人、足智多谋莎拉组队,为保护他的新朋友,踏上了一段史诗般的冒险旅程。A.X.L. is a top-secret, robotic dog created by the military to help protect tomorrow's soldiers. Code named by the scientists who created him, A.X.L. stands for Attack, Exploration, Logistics, and embodies the most advanced, next-generation artificial intelligence. After an experiment gone wrong, A.X.L. is discovered hiding alone in the desert by a kind-hearted outsider named Miles (Alex Neustaedter), who finds a way to connect with him after activating his owner-pairing technology. Together, the two develop a special friendship based on trust, loyalty and compassion. Helping Miles gain the confidence he's been lacking, A.X.L. will go to any length to protect his new companion, including facing off against the scientists who created him and who will do anything to get him back. Knowing what is at stake if A.X.L. is captured, Miles teams up with a smart, resourceful ally named Sara (Becky G) to protect his new best friend on a timeless, epic adventure for the whole family.