Inthefourthseason,SisichallengesthebestjockeyinBavariatoagrandhorseracetosavethefamily’sestate,CastlePossenhofen,afterthedeathofherfather.Backinherhomeland,shecomesacrossdarkfamilysecretsandultimatelymustaskherselfwhereshereallyfeelsathome.茜茜公主第四季