Liu Tianai, a high school sophomore with a paralyzed and indifferent face who avoids strangers, is actually a bad guy who is afraid of trouble. One day, he accidentally activated the "Koi Possession" system. From then on, his bad luck disappeared and he got a lot of good luck - he could win "another box" when buying a bottle of water, he could kick cash when he walked, and he could even answer all the multiple-choice questions in the exam. But he never expected that this good luck would involve him in the disputes of various comic characters: the crazy swordsman asked him to lead the way, the arrogant young lady asked him to be a bodyguard, and even the evil martial arts master was eyeing him and threatened to take away his "luck". Liu Tianai just wanted to pretend to be dead, but every time he was unlucky, it was the enemy - the villain fell off a cliff, kicked a rock in a sneak attack, poisoned himself... But he was expressionless throughout the whole process, and he was madly complaining in his heart: "I really just want to be quiet and be a salted fish." A koi boy with a cold face and a warm heart is forced to start a hilarious comic book adventure.
