In the 20th century a legendary doll maker named Rozen created seven dolls powered with gems called Rosa Mystica.

Since then Rozen sent dolls away to find masters and battle among themselves to gather each other's Rosa Mysticas; this competition is referred to as Alice Game.

Only winner can become perfect Alice doll and reunite with Rozen.

The purpose of the game is to increase trust with one of dolls through events and win Alice Game together.

[Edited from Psxdatacenter]