How about the movie "Japan Sinks"?

Billions of dollars to create the most shocking disaster masterpiece in history after The Day After Tomorrow. Without time and help, Japan is about to sink to the bottom of the sea.

It may happen tomorrow: the Japanese archipelago will cease to exist. This amazing scientific argument was presented to the ministers at the cabinet meeting of the Japanese government, which attracted a sigh. However, this argument was taken seriously by Prime Minister Yamamoto, who ordered the immediate establishment of the Special Disaster Countermeasures Headquarters. And appointed the minister of the Ministry and province, Ying Sen, to take charge of this work. Under the leadership of Ying Sen, Dr. Yukio Tanaka from the Institute of Seismology of Todo University led his research team to complete a series of investigations on crustal changes and came up with a plan to save Japan from sinking. During this period, major earthquakes and volcanic eruptions occurred in various parts of the Japanese archipelago, and the whole Japanese archipelago fell into panic. ...

In the face of disaster, the whole of Japan began to evacuate, but many people made silent contributions to saving Japan: Reiko Kobayakawa Abe of Tokyo Fire Rescue Team rescued a little girl who lost her loved ones like her at a dangerous time. Dr. Tansuo's two young submarine operators, Onodera Toshi Utsumi and Keiji Shinji, resolutely operated the submarine to dive 7,000 meters. Before Japan was about to sink, they ignited the N2 explosive that could separate Japan from the fractured plate, and exchanged their young lives for Japan to move from solving problems to peace. ...

Finally, two young submarine operators, Onodera Toshi Utsumi and Jiecheng Shensi, under the command of Dr. Jintian, blew up the boulder moving in the Indian Ocean plate, and the Japanese who took refuge abroad also returned to their hometown!