Hammerboy on AllMovie

As an isolated island society struggles to get back on their feet following a tragic worldwide disaster, a young island boy armed with nothing more than a hammer vows to save a fugitive princess in this animated adventure from South Korean filmmaker Tae Kun An. Mangchi spends most of his days either with his grandfather or flying around his remote island in a rickshaw aircraft until the day the aircraft of a young princess named Poplar falls from the sky. When Poplar reveals to Mangchi that her kingdom fell to a military coup and that her pursuers are desperate to overtake the land, her new friend pledges to use his hammer to help her escape her would-be captors and restore her kingdom to its former glory.