A Crack In The Timelines

More and more timelines are being changed, destroying history in the progress. The Supreme Kai of Time, in a act of desperation, has sent Trunks to enlisted the help of three fairly trained students to fix them. But one of them still holds a grudge against everything she and the 'heroes' have done to her and her mentor. Another plots to take other the very throne he believes is his and the last one just wants to surpass her mother in power and name. Can these three work together and restore peace in history or will they turn against each other in a bid to achieve their goals? Or possible team up with a certain scientist and her android and completely erase history? (The only thing I own is the plot and the oc's, everything else belongs to their owners.)