"I've finally found you, my saintess..." She was supposed to become the unwanted wife of a cruel knight commander, but...

Helena Olford is from a family of magic healers. Her selfish younger sister, Lily, is envious of her magic power and Helena's parents believe that she's fouled the reputation of the family, so they treat her as a servant. On top of that, Helena has to become the bride for a groom that Lily refused to marry. She marries Adolph, a knight commander who is feared in the neighboring country for his ice magic, while hiding her illness that has come about from continuing to use her magic. However, Helena still doesn’t know. She's actually the saintess that Adolph has been wanting and searching for all his life, even turning down a number of marriage proposals. He's a clumsy yet doting noble while she's an innocent yet ill young woman. They're guided by the goddess through their meeting, their misunderstandings, and now, they're falling in love.