The battle system uses a new feature called the "Age of the Moon", reflecting the game's lunar phases changing with each rest at an inn, or over a set period of in-game time. The altering phases change physical and magical attack powers for both player characters and enemies. Certain rare monsters also only appear during certain lunar phases. The game also introduces a new type of combination attack known as a "Band" ability. Similar to the Double and Triple Techs of Chrono Trigger, these allow two or more characters to coordinate separate commands into a single new attack at the cost of MP from all involved. Band abilities are extremely powerful, and there are over 70 different combinations in all.
Plot
Setting
Following the events of the original Final Fantasy IV, the second moon leaves the Blue Planet's orbit, and a period of peace begins as Damcyan, Eblan, and the Village of Mist are rebuilt, while the Kingdom of Baron comes under the rule of Cecil and his wife, Rosa. However, seventeen years later, the second moon reappears, much closer to the planet than it was the first time, and the unchanging Crystals begin to emit a soft light. The meaning behind these events, however, remains unknown.
Most of the cast from the original game return, with many of Final Fantasy IV's NPCs now playable. A number of entirely new characters are also introduced. Among these new additions are Ceodore Harvey, Prince of Baron and son to Cecil and Rosa; the "Hooded Man", a wandering swordsman enshrouded in purple robes who seems strangely familiar with Cecil's previous adventure; the "Mysterious Woman", a female antagonist able to summon Eidolons, who attacks the kingdoms in search of the Crystals, and the "Man in Black", a man with powerful black magic who refuses to reveal his past. The storyline of the game unfolds through episodic chapters, released roughly once a month, each primarily focused on a specific character. These chapters utilize foreshadowing, cliffhangers, flashbacks, and a nonlinear narrative structure to build the world setting and both explore and expand upon the mysterious events befalling the Blue Planet. The final chapter, which is considerably longer than all others, draws all of the chapters together, linking them up into one unifying narrative.
Synopsis
The story begins as characters from the original game begin to notice the re-appearance of the second moon. This is of great concern to Cecil and Rosa who remember their previous ordeal. Meanwhile, Ceodore sets out with Biggs and Wedge, members of the Red Wings, as part of his initiation into the famous air force. Ceodore is a nervous young man who is afraid he will never step out of the shadow of his famous parents. As his test begins, he descends into a cave to obtain the Knight's Emblem, which turns out to be a rat's tail. Wedge and Biggs explain that the purpose of the test was to show him that he already had what it takes to be a Red Wing, he just needed to prove it to himself. As the Red Wings set off, the game cuts to Baron, where Cecil, Rosa, and Cid are defending the city from an onslaught of monsters. After surviving several waves of attacks they meet the Mysterious Woman. Cecil asks Cid to take Rosa to safety as he confronts the intruder. The woman summons Bahamut and defeats Cecil.
Meanwhile, the airship carrying Ceodore also encounters monsters. The airship crashes killing everyone but Ceodore. Realizing he is now the last of the Red Wings, he sets out on the long journey home. However, he is attacked by a group of monsters, and is about to be killed when he is rescued by a Hooded Man. As the two head toward Mysidia, the game intercuts to Mt. Ordeals, where Kain is heading out toward Baron. Along the way, he gathers the Crystals of Air, Earth, Fire and Water at the request of the Mysterious Woman. Eventually, he kidnaps Rosa as well, stating that he is planning to kill Cecil so he can have Rosa for himself. Meanwhile, Ceodore, the Hooded Man, and Edward intercept Kain in front of Cecil's throneroom. At this point, it is revealed that the Hooded Man is in fact the real Kain, and the Kain that has taken the crystals and Rosa is Kain's "dark half." After their duel, the true Kain wins and becomes a Holy Dragoon. Kain, Ceodore, Rosa and Edward continue on their way to meet Cecil as the first episode ends.
The second episode begins with Rydia, Luca and Edge on board an airship in the subterranean world. The Man in Black mysteriously appears from nowhere and takes control of the airship, directing it toward Baron. As the party approaches the castle, they witness meteors from the second moon bombard the world. They return to Baron Castle to find it sealed by a magical force field. The four travel the world searching for their lost friends, encountering the Mysterious Woman again, and helping Rydia search for her missing Eidolons. After breaking the Mysterious Woman's control over Titan, Shiva, Ramuh, and Ifrit, the party are able to enter Baron Castle and find Cecil threatening Ceodore, Rosa and Kain. After freeing Cecil from the Mysterious Woman's control, the Man in Black reveals himself to be Golbez, Cecil's brother. By this stage, the second moon is getting closer to the Blue Planet and the party realize they have to find a way to stop it. Boarding the Lunar Whale they land on the second moon and descend into its depths. During the descent, the party encounters several bosses from the other Final Fantasy games. Eventually, they encounter Cecil's evil side, the Dark Knight. Once the Dark Knight is defeated, Cecil returns to the Light.
Once the party reach the lowermost depths of the second moon, they discover that the Mysterious Woman is not a single individual, but an entire race of identical women called "Maenads". Each Maenad was part of a group of beings created to retrieve the crystals. Venturing further, they encounter an entity known as The Creator. He reveals that his race died out due to a failure to evolve. The Creator decided that the universe should not be allowed to be overrun with inferior species, so he created the crystals and sent them to various life-sustaining worlds as a way to monitor the progress of life on each planet. He determined if the world did not evolve to its fullest potential it must be destroyed, which is what is currently happening to the Blue Planet. After the party defeats the Creator, the moon starts to break apart. As they escape, the party pauses to rescue a child Maenad, and the other Maenads turn on their "father" and defeat the Creator so the party can escape with her. As the Creator dies, he thanks the party for defeating him, indicating he may have felt some regret for his actions. Once the party returns to the Planet, they return to their various homes to resume their lives. Rydia adopts the child Maenad and names her Cuore, and Cecil informs Ceodore that he shall serve in the Red Wings under the command of Kain. Cecil also orders all of Baron's airships to be disarmed and instead be used to help the other kingdoms rebuild after the devastation caused by the second moon.