The story is about a boy named Van Yamano who wishes to own a LBX toy like his friends. An assistant of his father-who presumed to be dead rushes to him and gives an LBX toy saying it holds both hope and despair of humanity.

AD 2046, technology has grown all over the world and innovation is leading the way. The way of delivery methods has changed since the creation of fortified cardboard, which can resist every impact and keep its contents intact. As the popularity of the material grew, so did its purposes. The super strong cardboard was used as material for special battlefields for LBXs, specialized miniature robots made by Tiny Orbit that were once banned due to their destructive purposes. Their popularity has again risen due to the specialized battlefield, and special models of LBX were made. Four years after the creation of these fortified cardboard, in AD 2050, Van Yamano, a male middle school student, was entrusted with the LBX "AX-00" by a mysterious woman, containing a Platinum Capsule. Van learned from the woman that his father was still alive and knew about a secret conspiracy in the government. Van himself must protect the LBX and the Platinum Capsule, as its contents could change the world forever.