Across tells the story of 4 adventurers in a post-apocalyptic world, where most of the human population has been wiped out due to a deadly virus. The players will explore the realm of Across and learn about real-world cultures and its importance for communities.

Meanwhile, the Cyclones, a militant medical organization, is the only supplier of “medication”, a necessary tool for survival. It’s up to the players to help townsfolk with missions to level up, gain currency and get crucial information to move forward in the game. The players will be guided to the Cyclones Lab located in the centre of the map, where they will have to face the leader of the Cyclones, Dr.Dreamboat. Based on the player's actions throughout the game as well as their performance during the final battle, they will receive one of the four endings.