少年不知愁滋味。某地红杉森林正在举行一个露天音乐会，青年男女聚在一起笑语欢歌，醉生梦死。一伙嬉皮士偷偷潜入森林腹地，打算举行一个以海洛因和大麻为主题的周末狂欢派对。他们的喧嚣吵醒了居住在林中的老妇人，这个戴着里根面具的妇人向嬉皮士们展开血腥追杀……
本片为暗黑影业“8部恐怖致死的电影”系列中的一部，因毒品、暴力、血型等元素被MPAA定为R级，片名Tripper取自里根的绰号Gipper的谐音。影片公映日为4月20日，420暗指大麻。
剧情介绍：
Richard Ayoade takes a ruthlessly efficient approach to travel. In 48 hours he covers everything a city has to offer.
Episode 1 - Barcelona
Richard and actor Kathy Burke do Barcelona in 48 hours, including some far-out cuisine, Cava tasting, a guided tricycle tour and surrealist artist Miro
Episode 2 - Istanbul
Richard and comedian Adam Hills embark on a whirlwind visit in Istanbul, including a boat trip, a massage, a very close shave, and some haggling at the Grand Bazaar
Episode 3 - Iceland
Richard takes actor Jessica Hynes on a whirlwind weekend away to the stunning scenery of Iceland, for waterfalls, glaciers, geysers, whales, rotten shark and elf school
Episode 4 - Marrakech
Richard and actor Stephen Mangan eat steamed sheep's head and go hot air ballooning and camel riding on a quickie weekend trip in Morocco
