It is said that fireworks can calm the souls of the dead. For Tomoya Sugisaki, Aoi Harukawa, and Ryou Kobayashi, fireworks are what allowed them to meet the Summer Ghost. Believed to be the spirit of a young woman who committed suicide, the Summer Ghost only appears in a specific area and can only be seen by those who are within arm's reach of death. Tomoya is a creative soul being crushed by his academic obligation to get into a good university. Aoi is a meek girl who is relentlessly bullied by her classmates. Ryou is a former basketball star who had to forfeit his passion following a grim diagnosis. The only thing these three have in common is their ability to see the Summer Ghost. The Summer Ghost is said to be able to answer any and all questions pertaining to death—something the three teenagers desperately want to know more about. Dissatisfied with their initial meeting, Tomoya sets out to find the Summer Ghost once again. But the more time he spends with the ghost, the more the mystery surrounding her existence unravels.

An intense battle rages on at the Tokyo Qualifiers for the three remaining spots in the national volleyball competition. Nekoma High School, Fukurodani High School, Nohebi Academy, and Itachiyama Academy all passionately strive to participate in the tournament. Despite various issues on the court, Nekoma especially wishes to prove they are worthy of moving on to the national level. As the teams aim to secure their place by overcoming both their opponents and their own weaknesses, the Tokyo Qualifiers determine which teams will reign victorious and join the national competition.

The Daichis are a family in danger of tearing itself apart. Dissatisfied and money obsessed mom Seiko has served wimpy and otaku dad Mamoru with divorce papers. Daughter Nozomi who has always been saddled with all the housework, feels pained that everyone is using her. The youngest albeit most foul mouthed, Dai is forced to watch all this as everything is going to pieces. However when the Galaxy Federation recruits the Daichis to combat alien threats to the wellbeing of the Earth, it will be a chance for the family to save the world and maybe themselves.

Summer break has arrived, but while his other classmates are out having fun, Kimihiro Watanuki continues to work as compensation for the eccentric Yuuko in her shop. With the spirits and supernatural phenomena that bother him lessening, he pays his dues by cleaning, cooking, and doing whatever else the apparently lazy Yuuko needs. Watanuki, however, gets involved in a new predicament when Yuuko receives a mysterious invitation to a mansion whose owner seeks Yuuko's wish-granting ability. When he, Yuuko, and his classmate Shizuka Doumeki make their way to the peculiar residence, they meet others who were summoned by the same strange invitation. All of them are collectors of various unique items, drawn there by the chance to expand their collections. But as the collectors begin to disappear one by one, Watanuki and his companions must solve the mystery and put the case to rest, or find themselves in risk of danger.