Three years ago, genius researcher Chu Jixin and equally talented researcher Qiu Mushuang invented a mechanical exoskeleton armor that could change the future of mankind.
The kind-hearted Chu Jixin was worried that this technology would fall into the hands of evildoers, so he and his lover Qiu Mushuang jointly developed an armor qualification review system called "Thor's Hammer".
It was this behavior that caused the entire R&D team to fall apart.
The intensification of the conflict caused Qiu Mushuang to pay the price with her life.
Three years later, Qiu Mushuang's twin sister Qiu Muxue returned from studying abroad.
Qiu Muxue, who experienced countless adventures outside, transformed into the Black Arrow Woman and launched an act of revenge for her sister in her familiar hometown.
However, in the entanglement with her sister's lover Chu Jixin, she gradually let go of her hatred and became a righteous hero protecting the people.
Intention: Two-way redemption