In ancient China, during the Warring States period, a former servant named Xin rises through the ranks with a dream: to become the greatest general under the heavens. Fighting alongside King Ying Zheng of Qin—who seeks to unify China and end the chaos—Xin leads his own unit, the Fei Xin Force, onto the battlefield. With power reclaimed from the influential Chancellor Buwei Lü, King Ying Zheng begins laying the groundwork for a new, unified legal state with the support of key allies like strategist Changping Jun and legalist Li Si. As Qin launches a campaign to seize new territory from the state of Zhao, their advance is halted by the brilliant strategist, Li Mu. In response, Changping Jun devises a bold plan: to bypass Zhao's defenses and strike at the key city of Gyou, near Zhao's capital. To carry out this risky maneuver, a powerful coalition army is formed—led by the tacticians Ou Sen (Wang Jian), Kan Ki (Huan Yi), and the warrior queen Yo Tan Wa (Yang Duanhe). Joining them are the next generation of Qin commanders: Xin's Fei Xin Force, Mou Ten (Meng Tian)'s Gaku Ka Unit, and Ou Hon (Wang Ben)'s Gyoku Hou Unit, each operating independently. The fierce battle for Gyou begins, as the future of Qin's unification hangs in the balance.

Despite occasional setbacks, Operation Strix has remained on track to extract sensitive information from the enigmatic politician Donovan Desmond. To this end, spy Loid Forger has managed to maintain his pretend family consisting of his telepathic daughter, Anya; assassin wife, Yor; and their clairvoyant dog, Bond. Still the only one aware of everyone's true identities, Anya tries to sustain the family's cohesion while working to befriend Donovan's son Damian, her Eden Academy classmate. However, Anya's efforts instead earn her another Tonitrus Bolt, bringing her closer to getting expelled and jeopardizing the operation's success. Hearing the news, Loid faints from shock. In his unconsciousness, he reminisces about his tragic past and his journey to becoming a spy. Realizing what Operation Strix means to him and the world, Loid finds renewed motivation. Although they each work toward their own covert goals, the Forgers continue to cherish their chaotic yet blissful family life.

A decade ago, princess Krystal Novaty “Hime” Nokanatika traveled from another world to escape assassination attempts by an evil force. When she arrives in modern-day Japan, she encounters Haruto Satou. With him she shares a promise: he must forget what he has just witnessed, and the two will become friends. Now heading back to the Nokanatika Kingdom to fulfill her royal duties, Hime bids farewell to Haruto. However, when the young man suddenly remembers his first meeting with Hime, he rushes to the location where she first appeared and crosses the dimensional portal to be reunited with her. His arrival disrupts the marriage ceremony between Krystal and prince Marmarugias Gisaras. The wedding is brutally interrupted by the attack of an abyss monster who threatens the princess' life. Acting impulsively, Hime decides to exchange rings with Haruto, which grants her new husband light powers that permit him to slay the monster. Now dubbed as the Ring King, Haruto must marry four other princesses to acquire new magical powers and have a chance to prevail in his fight against the enemy of the world: the Abyss King.

Alicepia, a land of wonder that has existed somewhere in the world since ancient times, was once home to loving inhabitants known as the Alicepians. Their peaceful lives were disrupted when a mysterious monster, Jamaock, began to appear, threatening the sparkling brilliance of their homeland. If nothing is done, Alyspia will lose its radiance forever. This is the story of the "Princesses," whose unwavering songs of courage and hope shine even in the darkest times. A pop-song fantasia filled with energy and bravery -- Princession Orchestra!