Cau chuyen tiep noi sau bon nam ke tu nhung bien co trong Mahou Shoujo Lyrical Nanoha StrikerS. Tai thoi diem nay, co gai phep thuat Nanoha Takamachi da cuu thoat va chinh thuc nhan nuoi mot co be ten la Vivio trong gia dinh cua minh. Than phan thuc su cua Vivio khong he don gian khi co be chinh la hien than tai sinh cua Sankt Kaiser mang ten Olivie Segbrecht. Su xuat hien cung than the dac biet cua co be da keo theo nhung hanh trinh va thu thach moi ma ca hai can phai doi mat. Bo phim hoat hinh den tu Nhat Ban duoc phat song trong nam 2015 voi do dai tron ven 12 tap, tiep tuc the hien the gioi ma thuat day ly ky.