A family of five are struck with a complete new world that they have to accustom to. Following the story of Jack (17), and his family including his two other brothers (Adam 21, Carl 14), and his Mother and Father (Jill 43, Matt 45), they are now known as "System Holders".

These systems came from nowhere one day on an ordinary day, and completely changed their lives upside down.

Uknown to them, they would take on tasks which make them put their lives on the line - starting with the Tutorial Tower.

These towers occurred all over the world, however they were unique to each country. In England (Jack and his family are there), the tower is quite compact in comparison to places like France and The USA who's are quite long whilst being skinny. Although, one thing stayed the same - there are 100 floors and on each floor there are monsters which seemingly come from another world.