Tzuyu, a medical student who is secretly good in playing archery—but is forbidden to play. One day, she met an archery player, Sana, who suffered an injury and is asked not to play for the next competition. Sana's company is now, secretly, in search for a good archery player who can replace Sana to represent them. Tzuyu, tried out and after proving herself she will replace Sana. Sana will become Tzuyu's semi-coach, the one who will teach and practice her before the competion. On the very firs