A refrigerator is described. The refrigerator includes a cabinet that includes a storage compartment; an inner case that defines the storage compartment. The refrigerator further includes a first door that is pivotally mounted to the cabinet. The refrigerator further includes a second door that is pivotally mounted to the cabinet and that is provided with a pillar that is configured to rotate between a folded orientation and an unfolded orientation, the pillar being configured to contact the first door and thereby close a gap between the first door and the second door based on the pillar being oriented in the unfolded orientation and the first door and the second door being closed. The refrigerator further includes a drive assembly that is located at the inner case and that is configured to rotate the pillar. The refrigerator further includes a controller that is configured to drive the drive assembly.