The Forest of Menos! The Search for the Missing Rukia

Lunuganga catches Ichigo and the others by surprise and sucks them underground. They awake to find themselves surrounded by Hollow with Rukia missing. Suddenly, they are joined by a whole group of Menos Grande. Meanwhile, Rukia wakes up and has similar encounters with Hollows. She escapes only to find a couple of Menos herself. A strange figure with a mask appears to save her. Just who is this unknown person who wields a zanpakutou?