The film 'The Place Promised in Our Early Days', directed by Makoto Shinkai, was first released in Japan.
Japan is divided into two separate territories by the Union and the United States.
A mysterious tower is constructed on Mount Tengu, extending beyond Japan's airspace and spanning into the Union-controlled territory.
Two childhood friends, Saito and Hiroki, make a promise to reach the tower together someday.
Kumagaya, a girl with a special connection to the tower, joins Saito and Hiroki in their adventures and commitment to reaching the tower.
Saito learns that Hiroki has survived a serious brain injury caused by an accident involving the tower and is being kept in a specialized recovery facility.
Determined to fulfill their promise, Saito and Kumagaya plan to take Hiroki to the tower to complete the journey they dreamed of.
The trio undertakes the dangerous journey across the guarded border to the Union side to reach the tower.
Saito, Kumagaya, and Hiroki's involvement leads to disturbances in the tower's functioning and heightens tensions between the divided territories.
It is revealed that the tower is part of an experiment involving inter-dimensional communication and travel.
The three friends reach the top of the tower and witness the fulfillment of their long-held promise, transcending the boundaries set by their divided world.
