The black out in Sunnyshore? Have you met Giratina? If you haven't, just finish with the Distortion World and he should let you through. (Sorry if this doesn't help, and if you've all ready done that and it doesn't work maybe your game has a glitch. I hate glitches.)
Go to Heartrome city (stock up on revives and hyper potions)(and go to the pokemon center)
Head towards Mt.Coronet
Go to the other end and surf across to a bit were you can use rock climb go through complete this area and Looker will come and give you a flute
head through and its the same as Diamond/Pearl to get there of you don't have that I'll tell anyway)
You go out of the cave and your at snow head towards another place for rock climb now don't go up the second one instead go left and go through the grass to the next cave work your way through it then you'll be out in the snow again go down but don't go in the cave instead rock climb on the left and move around and they're will be another cave work your way through then once you get out 2 grunts will battle you together and then ou and your rival battle Mars and Jupiter then the portal will appear for the Distortion World but you need to talk too Cynthia and say yes and you will mstly be guided by Cynthia,Azelf,Uxie and Mesprit andafter that you'll battle Cyrus then after battling him go on to catch Giratina then leave with Cynthia you'll be at Sendoff Spring either fly or work your up and out then that man won't be there blocking you and there you are at Sunnyshore
