History teacher and experienced historical fencer Valentina Volkova is used to relieving tension during training: put on armor, take an учебний sword, and prove at a tournament that she has no equal.
But during the competitions everything goes wrong: Valentina receives a treacherous blow—and wakes up in faraway Scandinavia of the 9th century. Now she lives in the body of a local girl, Lagertha, quiet and obedient, whom the cruel hеavy-chieftain Sigurd, leader of sea raiders, intends to forcefully make his wife.
Only the old Lagertha is gone: inside is a modern woman hardened by sport and knowledge—the very “Valkyrie” who can hold a sword and has no intention of submitting to someone else’s will.