Start - Park at the Publix shopping complex and follow Laurel Canyon Pkwy on foot until you reach the "Trailhead" coordinates. From the Trailhead, you should be standing on a bridge and be able to look down on a small creek (Puckett Creek to be exact). If you've walked from Publix, the path to follow for the creek will be on your left of the bridge. Recommended that you first cross over the bridge and then go around the railing to the left to follow the wall down and start your adventure following along the creek to meet Dwayne Johnson.
The Geocache - From the Trailhead starting spot mentioned above, simply follow along the creek (towards the cache obivously) and work your way to the geocache coordinates until you reach The Rock. The coordinates should be fairly spot on, but if not, please mention it in the comments. The title is fairly self explanatory once you reach GZ. Would also recommend continuing along the creek after finding the geocache because it's quite the beautiful spot - down farther are two fairly large rock walls, the second of which has a fallen tree in front of it and a few good little nooks to climb up in and relax!
Alternative (for those who want the cheap/easy way out) - THIS WAY IS NOT RECOMMENDED IF YOU WANT TO EXPERIENCE THE FULL POTENTIAL OF THIS GEOCACHE (I'm only listing this way in case this helps out a family or two who aren't equipped to make it through the woods but would still like to find it with their kids) - It is possible to park at Publix, skip the Trailhead coordinates, and walk over the hill towards the cache going perpendicular to Laurel Canyon Pkwy. This way is not recommended though as I feel it takes away from the true experience of this cache and is not conducive to the overall geocaching mindset of getting out, exploring, and appreciating nature at its finest.