The narrative unfolds in a near‑future setting, where five 'Black Points' abruptly materialized worldwide as gateways to alternate realities. Soon after, bizarre beings launched invasions through these portals. These entities hail from five distinct worlds—identical realms existing in different epochs. To safeguard their own temporal domain, each of the five invading contingents fights to eliminate the others' future timelines. The decisive element is a single card‑shaped artifact in the looming conflict for survival today.