When the apocalypse arrives, this story rejects the naive, helpless heroine and the simple-minded heroine who relies on brute force. Instead, she survives through solid pharmaceutical knowledge, wilderness survival skills, and clear-headed logic. From zombie outbreaks and freezing winters to dwindling resources and giant mutated creatures, the pressure of survival keeps mounting. Along the way, there is not only the bond between companions fighting side by side, but also a quiet, unspoken love, deeply moving family ties, and both the light and darkness of human nature. She uses knowledge to rewrite her fate and, alongside her devoted childhood friend, searches for the last glimmer of humanity in a wasteland.