Young Jiahao, Lu Ming, unexpectedly awakens his innate talent and embarks on a thorny journey to fight against monstrous beasts. From the eccentric Jiahao who once walked alone across the playground to a prodigy of the Supernatural Investigation Bureau who slays demons and vanquishes evil, opening Heaven's Gate with a single sword strike, he proves through his actions that even when misunderstood, as long as one's conviction remains unshakable and one moves forward with courage, even the humblest beginning can cleave open the sky, illuminate the world, and protect it! This animated mini-series is adapted from the Tomato Novel story 'Jiahao Just Gets Stronger? Wielding a Sword in the Rain on the Playground, He Opens Heaven's Gate' by Luoye Zhi Ren.