Captain Grace Garland, a decorated U.S. veteran, returns home after two tours of Search and Rescue in Afghanistan. After being separated from her beloved K9 partner, Grace must rediscover the magic of Christmas. When she finds herself stranded in the town of River’s Crossing a couple weeks before Christmas, the local judge, Joe Peterson, offers her a place to stay on his property and takes it upon himself to show Grace everything she has been missing; Christmas, family, community, and love.

雪松湾的渔村，恐怖在水中蔓延。现在，怪兽已浮出水面，它们的掠食对象不在限于海洋生物，还包括人肉。一位船长和一名海洋生物学家必须向这种致命怪兽发起坚决的斗争，才能拯救全人类于灭绝。