'Knock Knock' tells the story of down-on-his-luck former boxer Sam Grant, who one night finds himself caught in a whirlwind of conjecture and conundrum as his colorful and quirky neighbors come to him with scary tales of their apartment's mysterious new resident. Inspired by the retro horror classics of VHS days gone by, 'Knock Knock', is sure to be a treat for any horror fan and aficionado. 　　译文(2): “咚咚”讲述了一个运气不佳的前拳击手山姆 · 格兰特的故事，一天晚上，他发现自己陷入了一个猜测和难题的旋风，因为他的五颜六色和古怪的邻居来找他，他们公寓的神秘新居民的可怕故事。灵感来自经典的怀旧恐怖录像带过去的日子,’敲敲’，肯定是一个款待任何恐怖片迷和爱好者。