Kaitou Saint Tail is a magical girl anime series that follows the adventures of Meimi Haneoka, a seemingly ordinary schoolgirl who transforms into the mysterious thief Saint Tail. With the help of her friend Seira, a novice nun, she uses her magical abilities to steal back items that were wrongfully taken, always leaving a calling card with her signature. The series blends elements of mystery, romance, and comedy, appealing to a wide range of audiences.