Ben and his wife Jules are in for a surprise when they inherit an abandoned coastal property that Ben's recently deceased mother never told them about. Untouched for 40 years the house looms like an eerie relic over land which includes a stunning private cove and beach. The beauty and tranquility of the place leave the family with the nagging question: why was this property kept a secret for so long? While Jules rummages through the house looking for answers, Ben goes to repair the buried water tank, not knowing that in doing so he is unleashing a long-dormant creature, fiercely protective of its environment.

失意的音乐家乔什·科曼在圣费尔南多谷公立学校教五年级，他的未婚妻梅根离他而去，高中朋友维克多搬来同住，科曼在焦虑、孤独和自我怀疑中成长。