Assistance needed with an RTC Query

I need help writing a query.  My tickets are structured as follows:

Epic #123

Story #456 (Parent is 123)

     Children:

          Task 387 (Parent is 456)

          Task 978 (Parent is 456)

Story #789 (Parent is 123)

     Children:

          Task 657 (Parent is 789)

          Task 105 (Parent is 789)

My goal is to write a query that will return all of the stories the Epic.  For example

Epic     Story & Tasks

123      456

123      387

123      978

123      789

123      657

123      105