The control unit includes a retrieval target article identification unit configured to identify a retrieval target article from among the articles stored in the storage unit on the basis of retrieval information indicating a retrieval completion state, a reverse sequential operation calculation unit configured to calculate a reverse sequential operation when it is assumed that the retrieval target article is moved to the storage position in the storage unit in a reverse sequence from the retrieval completion state, and a retrieval operation calculation unit configured to calculate a retrieval operation in which the retrieval target article is moved from the storage position in the storage unit and is in the retrieval completion state by reproducing the reverse sequential operation in reverse.