An artefact that can rewrite time itself, and cause the past to catch up to the altered past. Such a thing should not be used without careful planning. If you are not careful, you might end up changing more than intended.

The ripple effects of one well-intentioned change ends up causing more changes than foreseen, and now it will be three days before the artefact can be used to change things back.

Can 'Kiara' hide the fact that just yesterday everybody called her 'Sean'? Can she put things back to the way they were? Does she actually want to, or does she just feel that she should want to?