Well there's this princess, and the bad-guy hears her singing and kidnaps her so he doesn't have to share her voice with anybody and wants to make her marry him. But her true love's this other guy who sets out to save her and has to face all these dangers to get to where she is before she's forced to marry the bad guy.

[It just happens to be about pokémon...and a musical, but he's focusing on the plot here]