Susan`s father is Dialga, God of time. She can do things with time but space like her half sister. One day she gets a note from her father. But then the note opens a portal, and sucks her in. What will happen to her now!?

The Princess says that something is real fishy. She gives Twilight and the gang Princess Bubbledust. She and friends be worried? And why do her friends shadows keep going away? Is Bubbledust the one to blame, or somepony else?