You can mirror the animation of a Story across all three axes. 
	 
- Select the Story animation clip. 
		
 
- In the 
		  Properties tab of the Resources window, select and expand the animation. 
		
 
- Turn on 
		  Mirror Animation. 
		
 
- From the 
		  Mirror Plane list, choose an axis option. For example, to mirror animation along the global Z-Y plane, select 
		  Z-Y.