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.

In 2060, in order to solve various supernatural crises, the World Organization selected elite agents from all over the world to form a crisis bureau. The Dangerous Situation selected the elites of the elite to form an ace squad, named the Phantom. Three years ago, in a task of receiving treasures, due to the gullibility of the captain, Hyway, the Phantom Squad was attacked by the Derek Squad, and almost all of them were killed in action. Hyway himself was planted by Derek and fell into the cliff. However, the target treasure, the Immortal Stone, accidentally entered into Haoyuan's body, bringing him back from the dead, gaining the ability to manipulate time, and possessing super powers such as time static and time reversal. Our protagonist has lived as a fugitive from then on. Haoyuan didn't want to face the past, and chose to remain anonymous, leading a plain life, and guarding Gu Xiaoxi, the sister of his comrade-in-arms. But God’s will, a blue virus appeared in City Y, and the infected person’s skin appeared blue, then spread all over the body little by little, and eventually died. And Gu Xiaoxi was also infected. In order to break the blue virus incident and save Gu Xiaoxi, Hyway returns to the crisis situation. With the sexy and capable secret agent Yu Jie-Xia Rou, the quirky genius Loli-Tong Xiaoxiao, and the second-biggest gangster-Zhan Peng and other weird celebrities make a makeshift to form an alternative phantom team. And our legendary story begins here.