Shizukuishi,asmalltowntuckedawayintheTokyometropolitanarea,ishometothelawpracticeofoneSoraOushuu.Hisdevotiontojusticeensuresthatheisgoodatwhathedoes,buthealsohasasecret:Thewhitedoghelooksafterisactuallyawolf.Thiswolfalsohappenstobehisbrother,Fuuka,whocanreturntohumanformonlywhenthetwoarealone.Thebrothersfoundthemselvesinthisstrangestateofaffairsmanyyearsago,andeversince,theirpathshaverepeatedlycrossedwithanoldenemyofSora’s.Theirjourneyhasbeenlong,butSoraisbeginningtoseeaglimmerofwhatliesattheend.