A squid-like creature, known as a Happian, leaves his home planet with the desire to spread happiness across the universe. He lands on Earth, but quickly finds himself in danger of captivity by its inhabitants. Fortunately, he is found by an unsmiling little girl named Shizuka Kuze, who feeds him and names him Takopii. Feeling indebted, Takopii decides to do everything in his power to bring a smile to her face. The task is easier said than done, however. Shizuka is bullied by her classmates, she does not have a father, and her mother is never home—though the gravity of these issues flies over the naive Takopii's head. Even so, Shizuka does have one source of happiness: her dog Chappy. The connection Shizuka and Chappy share only increases Takopii's desire to make the girl smile. While Takopii's attempts to lift Shizuka's spirits lead to unintended consequences, he is determined to take things into his own tentacles, test his understanding of human beings, and achieve his goal of spreading happiness.

Twenty years ago, numerous "Spiritual Ruins Gates" suddenly appeared all over the world. The spiritual energy gushing out of them would awaken the supernatural powers of those who came into contact with them. These people who awakened supernatural powers were called "Spirit Warriors". Among them, the "Space series" Spirit Warriors became the strongest because of their outstanding performance in the "Beast Tide Disaster" and the scarcity of their awakening. Jiang Nan grew up in an orphanage in Jiangcheng, Lingzhou. He aspired to become the top spiritual warrior since he was a child. At the age of sixteen, he awakened the strongest and rarest space-based supernatural power, becoming the second space-based supernatural power in Lingzhou. Our story begins here...

What will happen when a desperate boy who grew up among evil people steps into the world of cultivating immortals? Immortals and demons can be separated by a thought, and life and death are not decided by heaven. Let's see how he goes against the current in this world where humans and demons coexist and evil spirits run rampant, and become a legend.

Six days and nights, a strange case, and the boy returning to twelve years ago, can he break the shackles of the Kingdom of God this time?