The expansion of the universe goes on. Black materials and dark energies are spreading in the cosmos and threaten the balance. In "Le Retour", the Trio will have to go through the human Sansara, and with the help of friend monsters, sosores & Gagon, they will have to brave Balrogs, ectoplasms and other deleterious entities to gain to ultimate cosmos and to the rank of Soundblast Knights.