A Sound of Thunder is a 2005 American science fiction thriller film directed by Peter Hyams and starring Edward Burns, Catherine McCormack and Ben Kingsley. It is a co-production film between the United Kingdom, the United States, Germany, and the Czech Republic. The film is based on the 1952 short story of the same name by Ray Bradbury. It is about "time tourists" who accidentally interfere too much with the past, completely altering the present. It failed at the box office, earning $11 million against a production budget of $80 million. It received negative reviews from critics. Plot In the year 2055, the Chicago-based Time Safari company offers the opportunity for rich people to hunt dinosaurs in the past via time travel technology. As a precaution against the potential change of the past, the company preys only on the dinosaurs who would otherwise die of natural causes and keeps the clients from stepping off the designated path. Because of the dangers of interfering with the timeline, the company's activities are vocally criticized by Sonia Rand, the developer of the time machine software "TAMI", who feels disappointed for not receiving credit during her work and is worried that some clients may alter the past through their activities. A trip with clients Eckels and Middleton goes afoul when the gun brought by team leader Travis Ryer fails to go off. The dinosaur, an Allosaurus, rushes the group, scattering the clients. Ryer is able to kill the dinosaur and afterwards, regroups the clients and returns to 2055 without further harm. The next day, however, Members of Time Safari including CEO Charles Hatton hear reports of global increases in temperature and humidity, and Ryer observes a sudden increase in plant life. On their next trip, Ryer and a new group of clients find that the Allosaurus he and the team intend to hunt is already dead and the volcano erupts much sooner. The team quickly returns and reports the changes, causing the government to shut down Time Safari for an investigation. Ryer learns from Rand that Chicago is being struck by "time waves" that cause drastic alterations to the city as they pass due to something that happened on a previous expedition. Ryer and Rand narrowly escape a building after a time wave causes the appearance of thousands of beetles and a tree bursting through its structure. Rand warns that more time waves can