At Winford Academy, situated in the historic town of Helen's Hill, the focus is on knights and the sport of jousting. Students at this school train to become knights, learning proper horsemanship and jousting techniques. The protagonist, Takahiro Mizuno, once trained to be a knight and jouster himself, but after sustaining an injury, he left the knight program and joined the begleiter (assistant) program instead. His skill with animals and previous jousting experience make him highly sought after, and many beautiful girls at the school ask him to be their personal begleiter, though Takahiro consistently turns them down.
One day, an unusual accident leads to his friend, Mio Kisaski, being challenged to a jousting duel, even though she is not a knight. Takahiro agrees to serve as her temporary begleiter, but this arrangement proves to be just the start of their partnership when she enters the annual tournament.