Fun, if not a bit too complex for 8-year olds.
so basically this website said that the plot was simple, a quest to save a princess. . The plot has basically nothing to do with saving a princess, but saving all worlds from complete and utter destruction by one of the greatest tragic villains in games. Also, the humor is dark compared to the other Mario games, with topics such as suicide. here is the plot in in simplicity.
Long ago, there was a book written that was said to see the future. naturally, people sought it, and many wars were fought over it. But no one that read it ever found true happiness. That was because it held dark secrets not meant for human eyes.....
Fast forward a few hundred years or so, and a man of the tribe of darkness,who protected the book, fell off a cliff. His name was Blue\miere. Blumiere accidentally falls off a mountain, is knocked into unconsciousness, and is found on the brink of death at the cliff's base by Timpani, who nurses him back to health at her home. When Blumiere awakes, he is shocked to find that a human saved him as he is from the Tribe of Darkness. Timpani dismisses the thought and states that anyone with a heart will save an injured one.
The pair soon falls in love and Blumiere attempts to escape from his castle home to see her again. His abusive father, who scolds him for making such an attempt, catches him. He is able to sneak away nonetheless and becomes more and more interested in Timpani, who returns his feelings. Eventually, Blumiere's father finds out what is happening and threatens Timpani, telling her to stay away from the tribe. Timpani is scared for her life and tells Blumiere that they can no longer see each other.
Blumiere can't accept this and tells Timpani that they must go somewhere where their love will be accepted and where they can get married. Timpani agrees and the pair makes plans to leave. However, before these plans can be put into effect, Blumiere's father abducts Timpani and uses his dark magic to curse her to wander dimensions until her death. Blumiere is filled with shock and horror when she suddenly goes missing and demands to know where she is. His father reveals what he had done to her and tells Blumiere that it is for the best. Overcome by rage, he vows to seek revenge. He becomes count bleck and vows to destroy all worlds, just as his father destroyed his one true love..........................
And thus, the game begins. I will not tell you more.