A noise is coming from the floor upstairs. Eunsu, hears this for over a month which causes uncontrollable anger to rise up. She gets eliminated again from a competition she had prepared for a long time. Eunsu decides to write her last piece with the theme of the noise between the floors and persuades her friend to help her follow and track the secret.。在古老的长白山上,有一个人参王国。在一次人参国百年庆典大会上,国王拿出了镇国人参国宝,闪闪发光的国宝被走兽国的熊罴王它们发现了,早就惦记着人参国宝的熊罴,趁机抢走国宝。不料被藏在暗处的飞禽国狡猾的雕王给暗中调包换走了。傻笨熊并没有发现,它把假国宝偷偷藏在树洞里,被喇咕精看见,骗它把国宝放在水族国更安全,正当喇咕精拿着国宝偷跑时,笨熊罴发现受骗,追来把喇咕精打败。小参娃来到走兽国要国宝,使用魔法跟熊罴大战,野兽林的群兽妖们都不是他的对手。熊罴使花招让参娃上当,小兽妖们把国宝偷运到了水族国,参娃寻找而来遭到了喇咕精的暗算,正当危难之时雌鱼母来救,使参娃拿到了假的国宝,他能发现国宝是假的吗?真的国宝还能找回来吗?还要经历那些曲折和磨难呢?。