An American movie tells that four people went back to more than ten years ago after taking a bath in a wooden barrel, and returned after a new life, but one of them didn't come.

Four brothers, john cusack, craig robinson, rob corddry and clark duke, were bored, so they went to the ski resort for a short vacation and went crazy. Don't want to, soak in a hot bath all night and find yourself back in the 198s (craig robinson pulls passers-by and asks, what color is Michael Jackson? Passers-by replied, black). That's about all the magical elements of this film. How several men who traveled back in time grew up in chaos is the theme of the film. However, since it is a science fiction film, the protagonist in the film will inevitably encounter some science fiction problems. For example, clark duke encountered the most embarrassing "grandfather paradox". He met his mother, and then found that his beautiful mother was given by the most wretched one of the four brothers, and she was pregnant ... < P > Adam (john cusack), who suffered such a big life disaster, was going to find his best friend to go to a ski resort for fun, but he didn't expect that several friends were also in trouble: Lu (rob corddry). Nick (craig robinson) is a tracheitis, and he is always supervised by his wife wherever he goes. Jacob (clark duke) is even worse. At his age, he is still addicted to video games all day. Looking at these friends whose lives are in a mess, Adam feels that when people reach middle age, their lives are really terrible. At the holiday place, four people found an open-air hot spring tub, but it always looked a little weird. The four people soaked in it with a try mentality and got drunk, and then something magical happened-they actually traveled from 21 to 1986! Boy, Adam thinks it's time to change his life. He will use this wonderful shuttle to correct all the mistakes he made in the past. But Adam can't control the behavior of his other friends. They all played as crazy as they could in the past. Soon, they realized that the future would be chaotic, so several people began to try their best to clean up this mess ...

Four friends from small to big: Adam (john cusack), Lu (rob corddry), Nick (craig robinson) and Jacob (clark duke). When people reach middle age, they have their own crises and are lovelorn! Frustrated! Lose male dignity! They decided to revisit their old places and find back their long-lost frivolous years. Unexpectedly, they got drunk and got High all night, and the magical jacuzzi actually took them back to 1986 ... Will they have fun as they did then, or will they take this opportunity to turn around the future and reset their lives ...