In the movie Crack in the World, Dr. Steven Sorenson is a geologist who believes that the Earth's interior is a source of unlimited energy that can be harnessed through the explosive power of nuclear technology. Sorenson develops a plan to detonate a nuclear device deep inside the Earth's crust in order to tap into this energy source.
Sorenson convinces his colleague, Dr. Maggie Sorenson, to join him in his experiment. They also recruit a team of experts to help them carry out the project. The team drills a hole deep into the Earth's crust and lowers the nuclear device into the borehole.
As the device detonates, a massive crack forms in the Earth's crust, spreading rapidly and threatening to split the planet in two. Sorenson and his team are now faced with the daunting task of finding a way to stop the crack from growing before it's too late.
The team races against time to come up with a solution. They try various methods, including explosive charges and a giant concrete dome, but nothing seems to stop the crack from expanding.
Along the way, the team faces other challenges too, such as earthquakes and volcanic eruptions caused by the crack. They also have to deal with the personal and emotional toll of their mission, as they struggle to balance their desire to save the planet with the risks they are taking and the potential loss of life.
In the end, the team manages to come up with a makeshift plan involving a nuclear device that they hope will seal the crack before it's too late. They execute the plan, risking their own lives in the process, and ultimately succeed in saving the planet from a catastrophic disaster.