前工程师斯科特(保罗·路德 Paul Rudd 饰)由于劫富济贫进了监狱,出狱后的他为了争取看望女儿的权利又走上了盗窃之路。没想到一次意外的偷盗事件让他成为了新一代“蚁人”,老蚁人汉克.皮姆博士(迈克尔·道格拉斯 Michael Douglas 饰)成为了他的导师,可皮姆博士的女儿霍普(伊万杰琳·莉莉 Evangeline Lilly 饰)却并不看好他。但是危机迫在眉睫,为了对付强大的敌人拯救世界,斯科特不得不叫来自己的一帮狐朋狗友帮助自己完成一个不可能完成的任务。而取得任务的成功也是斯科特挽回女儿的关键,屌丝能否逆袭就看最后一击。Armed with the astonishing ability to shrink in scale but increase in strength, con-man Scott Lang must embrace his inner-hero and help his mentor, Dr. Hank Pym, protect the secret behind his spectacular Ant-Man suit from a new generation of towering threats. Against seemingly insurmountable obstacles, Pym and Lang must plan and pull off a heist that will save the world.