 In Final Fantasy VII , she is a young woman who joins the eco @-@ terrorist organization AVALANCHE . As the story progresses , AVALANCHE begin to pursue the game 's antagonist Sephiroth , and the player learns that she is the last surviving <unk> , or " Ancient " , one of the planet 's oldest races . She has also appeared in the later @-@ released Compilation of Final Fantasy VII and Kingdom Hearts series . 
