On this episode of The Flop House, we examine a sound of thunder, the movie that made Ray

Bradbury prematurely roll over in his non-existent grade.

Wikipedia has this to say about the plot of a sound of thunder. According to the film,

the established rules of time travel are, one, don't bring anything back,

two, don't leave anything behind, and three, don't change anything in the past.

These rules were established by a businessman who has recently developed a time machine.

With it, he created a business which offers prehistoric safari trips to wealthy hunters.

Travis Ryan has been trained to lead these safaris. On one of them, the guides are

escorting two men along a path, and they are attacked by an alasaurus, and the leader's gun

fails so the alasaurus does not die when it was scheduled to do so. Panicked by the attack,

one of the explorers steps off the path. The guides exchange gun parts with another gun,

kill the alasaurus, and return to the time portal. Unseen to the explorers, a muddy footprint

has been left off the path. On the next expedition, Ryan is taking two other hunters on the time

safari, and states that they are about to witness a volcanic eruption, but the volcano was already

in the process of erupting, and they are forced to return to the present. The time safari business

calls on Sonya Rand, who invented the time travel machine, but she refuses to help anyone.

Rand explains that since they altered something in the past, the future will proceed to change

in a series of time waves. She says that the changes can't happen all at once, and they will

proceed in order of evolution. First, everything will reset, then the vegetation will change,

then wildlife, and finally humans. The business attempts to send Rireback to fix the past,

but a time wave hits and all the electricity goes out. Rire and Rand must determine what caused

the change before they can fix the past. They discover that a butterfly was stepped on during

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