Pokémon Ranger: The Fourth Light

Everyone heard about a story about the Three Princess of Almia and they save the Almia from their Father, the King, who was consumed by darkness. However, there was supposed to be a fourth light, a princess, that help that eliminate the darkness but she was a baby at the time. Instead of eliminated the darkness it got weakness and was put in a crystal in a cave guarding by Darkrai until the princess grow up to help eliminate it. Knowing the they are weak and can't protect their baby sister the three princes summon Dialga to send the baby in the future , Uxie to ease all memory of the monachry and willy let their soul and light turn to gems and travel back to where they are ban to, Red deep inside a volcano guarded by Heatran , Yellow in a temple guard by Cresselia and Blue stay in the castle guarded by Lucario. They hope that one day the princess will find them bring them to the dark gem in order the purify the shadow crystal before anyone found the crystal and going to be consume the darkness inside of it. Few year have pass and the princess is now 2000 year and headed to her to become the best ranger she can ever be with out knowing who she really is