Discord's Apple

When Evie Walker goes home to spend time with her dying father, she discovers that his creaky old house in Hope's Fort, Colorado is not the only legacy she stands to inherit. Hidden behind the old basement door is a secret and magical storeroom where wondrous treasures from myth and legend are kept safe unit they are needed again. The magic of the storeroom prevents access to any who are not intended to use the items.
Evie must guard the storeroom against ancient and malicious forces, protecting the past and the future even as the present unravels around them. Old heroes and notorious villains alike will rise to fight on her side or to undermine her most desperate gambits. At stake is the fate of the world, and the prevention of nothing less than the apocalypse.