In that house , two young children -- Henrietta and Leopold -- await the next legs of their respective journeys : Henrietta is passing through on her way to meet her grandmother .
Leopold is waiting to meet Leopold 's mother for the first time .
In that house , two young children -- Henrietta and Leopold -- await the next legs of their respective journeys : Henrietta is passing through on her way to meet her grandmother , while Leopold is waiting to meet his mother for the first time .