Lina, a healer with a magical power called "Saint," is one day suddenly exiled from her childhood friend's party of heroes! Lina is shocked by the unreasonable expulsion, but she quickly forgets about them and decides to live the slow-life she longed for! Just at that moment, another childhood friend appeared, Henri who is now a nobleman. He is  excited to see Lina again for the first time in 5 years, but for some reason there are suspicious movements among the heroes' party?! A second life filled with trouble for the strongest saintess who just wants to live leisurely, the long awaited comic serialization!