When Chelsea and her friends get in trouble with the cops, they flee the city and go on the run. Fueled by a hallucinogenic drug called Echo, they hope to lay low-and get high-in an old family hideout in the woods.However, Chelsea has reservations about going back to nature and secrets she’s not sharing with her friends. When a shot rings out, her past comes crashing back, and the punks find themselves pitted against the local authority- an unhinged park ranger with a real axe to grind…当Chelsea（切尔西）和她的朋友遇到警察的麻烦时，他们逃离了这个城市，逃跑了。在一种叫回声的致幻药物的刺激下，他们希望在树林中的一个古老的家庭藏身处低调行事，然后变得高调。然而，切尔西对于回归自然和她没有和朋友分享的秘密有所保留。当枪声响起时，她的过去又回来了，小混混们发现自己与地方当局对抗——一个 精神错乱的公园管理员，拿着一把真正的斧子要磨……