Sekinuma Keiko supported her boyfriend Kokubu Shinsuke while attempting to get into law school. He promised that he would marry her after becoming a lawyer, but Shinsuke dumped her instead. One day, Keiko receives a wedding invitation card from her ex-boyfriend and explodes with anger. She decides to get revenge. Keiko takes her rifle, which she uses for her shooting hobby and enters the wedding reception.
Meanwhile, Origuchi Kunio is the ownerof a fishing tackle store. His wife and child were brutally murdered three years ago. He pays attention to the rifle owned by customer Sekinuma Keiko and schemes his own plan for revenge, but employee Shuji Sakura becomes aware of his plan and tries to stop him.
~~ Adapted from the novel “Sunakugari” by Miyabe Miyuki.