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简介：Aworld-famousboys’choirgoesonatour.Inthehandsoftheirsevereconductortheyareanobedientmusicalinstrument.Butleftalonewithoutsupervision,theyarejustplayfulchildren.OnceinSeoultheconductorisaccidentallytrappedintheelevator,andtheboysareleftalone.…