Mission 8

Talk to Corona (girl with blonde hair) and then talk to princess sparkle who is on the left side of the bridge. She should give you a purple flower.

Pick up the purple flower and take it the the healer who is at the right side of the bridge and up. After this princess sparkle should be at the city gates with the guards. Talk with her and the guards will let you in.

After all this try talking to corona and thats it!! simple huh!