It’s time for the kids to decide on the school club they wish to join. Yeo Wool chooses to let Yi Chan join a hockey club. On the registration day, she encounters Ji Sun, Do Young, and the other moms. Meanwhile, Yeo Wool continues trying to find out the relationship between her dead husband and Do Young. She hires a private detective to dig into Do Young. Yeo Wool soon receives surprising news from the private detective.