The underlying concept behind
Spectral Force 3 is kind of neat. All of the kingdoms in Neverland are at war with each other and, as a rag-tag band of mercenaries, you set out to take missions to help each kingdom's war effort. You're free to help out whatever kingdom you want and your actions will influence how the war plays out, in particular which kingdoms fall and which come out on top. However, the storytelling does nothing to build on the concept. There's no backstory to the conflict and nothing to make you want to take sides. Within the context of the game it works, since details like these probably wouldn't mean much to mercenaries, though from the player's perspective there's no attachment to the story or the characters. There's some back and forth dialogue between characters, but none of it adds anything to the experience.
Missions are doled out either by the individual kingdoms or set off by your actions. Taking jobs from kingdoms is a good way to grind money and experience, though they are also the only way to advance the story since your ultimate goal is to help topple kingdoms. Whenever a kingdom falls, its heroes are scattered and, if you meet certain conditions, will join your party if you complete special missions. Unlocking new members is one of the game's better aspects. Requirements act like a small tactical puzzle that helps you decide which kingdom to help out since it is possible to lock yourself out of characters. The only drawback is the lack of information to help you make better choices.
Regardless of what type of mission you choose, each plays out exactly the same. You take a small party into a mission and attempt to destroy the other side. Some missions mix up the goal and require you to survive a certain number of rounds or keep a character safe, but even then you're doing the same thing every mission. This is where the game's lack of personality really comes out. Unless you're really jazzed about unlocking new characters, which essentially breaks down to basic Achievement Whoring, there's very little to keep you motivated.