Ellana Barquez is a known introvert. She was detached from everyone, even with her own sister, Marose. She fancied anything that has something to do with mysteries and that is the reason why she's being called 'impossible'. But something phenomenal happened wherein she uses her knowledge to fight for their lives. A zombie apocalypse tumbled into their place that pushes her to be someone she doesn't even imagine to become. Will she be able to take and accept the calling, be a sister, for once, to her younger sibling and help themselves survive? Or end up being vulnerable and defeated? How will that unfortunate occurence help them changed? Will the reconciliation between Ellana and Marose will finally be serve?