In 20xx, a civil war broke out in a small country in Asia in spite of the dispatch of UN forces. But a picture taken by accident in the battlefield accelerates the peace process: a photograph of a flag, which became the symbol of peace. However, just before the peace agreement is finalized, the flag is stolen by an armed extremist group in order to obstruct the truce. To rescue the flag, the UN sends the Special Development Command (SDC, which is armed with the High Agility Versatile Weapon Carrier (HAVWC)), along with an embedded photojournalist to record their activities. That photojournalist is Saeko Shirasu—the young camerawoman who took the picture of the flag.

It is the 25th century. The dark lord has 'infected' history with time-devices that could damage history beyond repair. Flint and his father lived in the prehistorics when they got turned into fossiles. They are discovered and Flint ges turned back to his original state. With the help of his father, a boy Tony and a girl Sara he has to travel trough time to bring the time-devices back to the land of time so history will be saved.

Prince Marth, heir to the throne of Aritia, has fled his homeland and the invaders bent on conquering the entire continent. Together with the Aritian Knights he hides and bides his time in the friendly island kingdom of Talus. Though criticized for constantly daydreaming or being in a bad mood, he has found a friend in Caeda, the princess of Talus. Together they indulge in hayrides and shopping trips, or just standing upon the parapet and looking out over the land. However, despite how pleasant life is, he cannot forget the circumstances that separated him from his land and forced his beloved sister to sacrifice herself for him.

Two years ago, the world was changed forever. The young Cloud Strife and his band of friends may have defeated Sephiroth and thwarted his plan to crash a giant meteor into the Earth, but this victory was not without great cost. The highly populated city of Midgar was nearly ripped apart in the conflict. Fortunately, many of the city's citizens were able to evacuate to safety, and in the years afterward have formed a new home called Edge. Final Fantasy VII: Advent Children revolves around Cloud and Tifa as they try to make new lives for themselves, as well as for those around them, in this new city. Together they run a courier service, and tend to their mutual friend Barret’s adopted daughter Marlene and a young orphan by the name of Denzel. Denzel, Cloud, and scores of children are suffering from a mysterious new illness called "Geostigma." The children of the city have one other threat looming over their heads—a trio of powerful men are kidnapping infected kids for unknown reasons. Cloud is determined to save these young ones, not only from Geostigma, but from the kidnappers as well. He has no idea, however, that these men share a link to his old enemy, Sephiroth, and Cloud’s quest to vanquish them will bring him back into conflict with the demons of his past. If there is any hope in conquering these threats, it lays within the bonds of friendship between Cloud and his allies who saved the world once, and now must do so again.