Tsutomu, an average middle school kid busy studying for the final exams to enter high school runs into a man running from someone and gets caught up in the chase. In all the confusion he gets accidentally killed. Luckily Birdy (an interplanetary agent) knows a way to save him, unfortunately that means joining bodies to become one. So now he is stuck with this officer and along for the ride capturing criminals and saving lives.

The Yamada sisters, Kyou (15) and Asu (9), are students studying in secondary and primary schools respectively. Their mother passed away and their father ran away after incurring gambling debts. Despite the difficult circumstances, both of them decide to overcome the unhappiness and welcome their days with enthusiasm and pride. Fortunately, with the change in the law system several years ago, Kyou is able to study and simultaneously take temporary jobs (such as distributing newspapers and tutoring) to make ends meet. On the other hand, Asu takes charge of household chores, prepares meals, and manages the finances to assist her older sister. Surrounding them are also good and kind neighbors such as the novelist, Saegusa-san, and the aunt at the public bath who watch over them. Although life is difficult and at times painful, the sisters are happy to have each other. (Source: ANN)

Lin Dong continues his journey to find the ancient relic and make himself stronger so that his family can enter the main one. He also becomes stronger so that Ling Qingzhu approves him and they can get together.