一名不受重用的警察追查利用约会网站犯罪的加害人，却发现一对夫妇的骇人秘密，以及背后错综复杂的阴谋。

When a covert rescue mission goes wrong, four former Navy SEALs are captured and thrown into an underground death match. Watched by depraved billionaires, they are forced to fight in a brutal tournament. With no weapons and no way out, the team must rely on their training and unbreakable bond to survive the bloody arena, dismantle the entire operation and reclaim their freedom.

环保警察Eric（MarcoPigossi饰）对里约热内卢海滩上淡水海豚尸体与其妻子死亡之间联系的调查，使他意外发现了巴西民间传说中隐藏的实体世界。他卷入了两个世界的纷争，与此同时他的身世也逐渐清晰起来。@马吉尔求唱歌