Koji is a college student and aspiring photographer. One day, while Koji is taking pictures of families in a Tokyo park, a man suddenly appears within his camera's view and interrupts his shot. However, he's later contacted by the man with an odd request. Without revealing the purpose of the job, he asks Koji to take photographs of a woman who walks through the park with her young daughter. Koji agrees, but the strange task leads to changes in the relationships he has with the women in his life. Those women include a longtime friend that Koji can talk to about anything and his step-sister, who offers both kindness and firm encouragement when he needs it. As Koji photographs the new third woman in his life, he feels as if she reminds him of someone from a distant memory. Adapted from a novel by Yukiya Shoji.