为了追求自己的“兔”生意义，年少轻狂的比得（詹姆斯·柯登JamesCorden配音）踏上了背井离乡的路并成功赢得老江湖巴拿巴的青睐、成为了团伙中的扛把子，怎料却将追随而来的昔日老友们推入死亡陷阱。幡然醒悟后，比得化身“兔界阿汤哥”带领同伴展开海陆空三栖大营救。高空跳伞、水下救援、雪山速滑、快艇追击，无所不能。在这场冒险旅途中，比得收获了友情，理解了亲情，最终实现了自我成长，成为真正的“兔一哥”。
翻译转自微博@LNS字幕组 讲述一对幼儿园冤家在高中重逢后，因为意外换身而发生的一连串啼笑皆非的故事。
The film starts with a masked killer entering an apartment and murdering a young couple, Krish and Shruti one cold, rainy night in Coimbatore. Five years later, Deepak, the retired police inspector who lost his leg while investigating the case, receives a call from a friend. The friend’s son is adamant on becoming a police officer. So, the friend sends his son to Deepak so Deepak can brainwash him into not joining the force since his parents feels it is too dangerous. When the son arrives, he asks Deepak to tell him how he became crippled. Deepak begins to narrate his story of the final case that robbed him of the job he loved.
九州乱世，胤朝太师之女南星姿容倾城，在大婚前日却惨死于闺房，震惊东陆，引来各种族奇师的探查，内外纯钢的萝莉王钢偶然遇到离奇“复活”的南星，被一步步被带入神秘洞窟，卷入一团更大的阴谋。