Gremlin starts as we meet the Thatcher family, Adam, Julie, Anna, Charlie and grandmother Mary who receive the mysterious box from their Uncle Jim as the family is grieving the loss of their child. When a small creature emerges from the box it starts taking lives, one at a time as Adam must follow the warning of giving it to someone he loves to break the curse put upon his family, but the secrets will come out about what happened to their other child and the personal lives of the family. Can they escape from this curse before it is too late.