A mysterious man, Dean, returns to his hometown of Grimsby after many years abroad in the Army. His arrival is met with animosity, particularly from his father, an avid pigeon racer. Dean is drawn back to confront his demons, and confess a secret to a childhood friend, Jess, only to discover she has been struggling since the untimely death of her husband. Whilst attempting to raise her child and battling a crumbling economy and dearth of opportunities, she is pulled into a harsh underworld. Dean must help her, throw her a lifeline, but the situation only darkens. When their lives are threatened he will do all it takes to make sure she is safe.

在一個罪犯猖獗的城市，黑幫大老文森在得力助手強尼的輔佐下，坐擁整個地下江山，不過最近要奪他老命的風聲四起，他的地盤也開始不尋常地出現警察蹤跡。氣急敗壞的文森緊急花錢疏通白道，另一方面則派強尼大規模掃蕩，凡是嫌疑之人皆不放過！雖然他強悍的作風掌控了安全，但卻控制不了每個人的心…

卡拉格，半人半山狮，是一个在落基山脉荒野长大的变形者。然而，他渴望了解自己人类的一面，这股好奇心驱使他离开了他的山狮家族。在与人类寄养家庭生活期间，他隐藏了自己“木行者”的身份。他逐渐意识到自己无法在人类社会中找到自己的位置。直到一所秘密的木行者寄宿学校发现了他，他才感到如鱼得水。在克利尔沃特高中，他找到了朋友——一只厚脸皮的松鼠霍莉和一头害羞的野牛布兰登。而朋友正是卡拉格所需要的——因为“木行者”的世界充满了秘密和危险。当卡拉格发现他的导师——百万富翁安德鲁·米林——正在策划一个报复人类的秘密阴谋时，他必须选择立场。