On stepping into Chargestone Cave, you’ll immediately find Bianca, staring at one of the glowing magnetic rocks that linger around the cave.  As you approach, she turns and greets you- she’s been waiting here to let you know about the floating stones.  There are large magnetically-charged shards of rock floating in places about the cave, which can be pushed towards more grounded rocks to get them out of the way, thanks to the electrical charge in here.

After a few moments, Bianca recalls that she was in the cave in the first place to research something, and turns to head further in.  Follow her path until you reach the first floating rock, which you need to shove to the left towards the large boulder sticking out of the floor there.  Take a quick loop around the boulder to pick up a Full Heal off the ground, then return to the main path and head North.

You’ll find another glowing shard blocking the only traversible part of a ledge- shove it to the right to get it out of the way and then head North through the ledge and up the left staircase.  Here, you can face down a scientist.

Battle: Scientist Ronald (1240 Poke)
Opponent: Magneton Lv 30

South of him you’ll find two more magnetic rocks.  Shove the first one to the right to send it to the nearby boulder and you can skirt past the other to grab a Max Repel, handy if you find yourself out of healing items in the middle of a cave, tower, or other ‘dungeon’.

Head back down the stairs and then up the North staircase and you’ll run across a lurking musician.

Battle: Guitarist Anna (960 Poke)
Opponent: Emolga Lv 30

Keep an eye on Anna’s Emolga- the thing is fairly tough and strong, and will often lean on Double Team when its HP start getting low.