Osnovna zgodba:
* Brez srca: Evil creatures that consume hearts and spread darkness.
* Keyblade Wielders: Izbrani bojevniki, ki se borijo proti Brezsrčnim z uporabo čarobnih Keyblades.
* Sora, Riku in Kairi: Three childhood friends who get caught up in a battle between light and darkness.
* The Search for the Seven Princesses of Heart: Sora and his companions must find the Seven Princesses of Heart whose pure hearts hold the key to defeating the ultimate evil, Master Xehanort.
Ključni elementi:
* Disney Worlds: Sora and his friends journey through various Disney worlds like:
* Kingdom Hearts I: Traverse Town, Wonderland, Olympus Coliseum, Monstropolis, Agrabah, Deep Jungle, etc.
* Kingdom Hearts II: Disney Castle, Port Royal, Twilight Town, Hollow Bastion, etc.
* Liki in elementi Final Fantasy: The series also features characters and themes from the Final Fantasy series, including:
* Cloud Strife, Sephiroth, Aerith Gainsborough (from Final Fantasy VII)
* Summoning monsters like Ifrit, Shiva, and Bahamut
* The recurring theme of destiny and chosen ones
* Edinstvene zgodbe in liki: Kingdom Hearts introduces its own characters and story threads interwoven with the Disney and Final Fantasy elements.
Na splošno je Kingdom Hearts edinstvena mešanica akcije, pustolovščine in srce parajoče drame s poudarkom na prijateljstvu, ljubezni in moči svetlobe, ki premaga temo.
Omeniti je treba, da ima serija zapleteno in zapleteno zgodbo, ki se odvija v več igrah, zato je priporočljivo, da jih igrate v vrstnem redu izdaje, da v celoti razumete celotno pripoved.