In a world where supernatural forces and magical creatures exist, two different worlds have begun to collide.
In the Digital world, where Digimon live and thrive, the balance between skills and power has been maintained for generations. Meanwhile, in the world of Shin Megami Tensei, powerful spirits and demons prevail, with a confrontation between angels and demons.
When dimensional portals began to open between these two worlds, a confrontation between the Digimon and the spirits in the world of Shin Megami Tensei broke out. Digimon such as Agumon, Gabumon and Omnimon face off against angels and demons from the Shin Megami Tensei world such as Jack Frost, Cerberus and Lucifer.
The battle between the two worlds takes place not only on the surface, but also contains a hidden confrontation of knowledge, power and existence. Both sides must find ways to adapt to new skills and powers, while finding ways to maintain balance between the two worlds.