When Kazumi emerges from a trunk, she’s naked and in front of a mysterious man. What’s worse, she’s lost her memories and has no idea how she got there! After eating a meal with the man – a would-be bomber –  the young lady finds herself in the midst of danger and is saved by two girls named Umika and Kaoru who tell her a secret: they’re both magical girls, and she is too! Now, Kazumi must re-learn about the world of magical girls, try to recover her lost memories, and meet other companions along the way.