Ep 3. Chaos at the Earth's Core

In Justice League season 5 episode 3, titled "Chaos at the Earth's Core", the Earth is in great peril once again. This time, it's not a threat from outer space or a villainous mastermind, but a natural disaster deep within the planet's core. Magma is erupting from the Earth's mantle and causing massive earthquakes all over the world. As the Justice League tries to figure out what's causing the catastrophe, they learn that it is connected to an ancient civilization that lives beneath the Earth's surface.

The team splits up to investigate different parts of the world that have been affected by the earthquakes. Batman and Martian Manhunter go to investigate a city that sank into the ground and is still intact, while Wonder Woman and Hawkgirl head to an underground cavern system in Africa that is experiencing dangerous temperature fluctuations. Superman and Flash attempt to stop a massive volcano from erupting in South America. Meanwhile, Green Lantern is tasked with figuring out how to stop the earthquakes from happening altogether.

As the heroes delve deeper into the Earth's core, they discover that the ancient civilization responsible for the earthquakes is actually a group of subterranean people called the Mole Men. The Mole Men have been living beneath the Earth's surface for centuries and have developed advanced technology to sustain their civilization. However, they have been drilling deeper into the mantle to obtain resources and have inadvertently caused the earthquakes.

The Justice League realizes that they need to stop the Mole Men from drilling any further. However, the Mole Men are not easily convinced and believe that the surface dwellers are a threat to their way of life. A battle ensues between the Justice League and the Mole Men, with the fate of the Earth hanging in the balance.

In the end, the Justice League is able to convince the Mole Men to stop drilling and work together to find a solution to the earthquakes. Green Lantern constructs a massive energy shield around the Earth's core to stabilize the tectonic plates and prevent future disasters. The Mole Men agree to cooperate with the surface dwellers and share their technology to prevent any future conflicts.

"Chaos at the Earth's Core" is a thrilling episode of Justice League that showcases the team's ability to handle natural disasters just as well as they handle super villains. It also highlights the importance of communication and cooperation between different civilizations to solve problems that affect the whole planet.