Idea about a time travel is seen many times before. This movie takes that idea and brings it to the level of comedy that is very dark at some moments. Story is completely unbelievable, which brings to an end all discussion about time travel paradox and similar inconsistencies. This story is more suitable for low budget comedy, but in this case, budget was far from low. John Cusack, Craig Robinson, Rob Corddry and Clark Duke are starring as four main characters. They start partying in 2010 in hot tub and they woke up in 1986. Because of the events that happened that evening they have to do exactly the same things or Jacob (Clark Duke) is not going to be born. At that night his mother had intimate relation with the man who is his father. Thins changed a lot since 1986th, and these four men feel like they are on safari. Everything is so different and yet they were there, and they did things that are not proud of. With high risk, they have to be very careful not to disturb order of the events. Hot Tub Time Machine is a great comedy. Costumes and stages are done correctly according to the 1986. Movie can bring spectator back in the past. Audience has to be prepared because this movie can make you laugh to tears.