A Sticky Episode

Episode 65 of Robin & Batgirl: A New Adventure

Batman told Nightwing and Batgirl that he will be gone for one day cause he will go to an important meeting concerning Wayne Enterprises and that they take care of the Batcave.They slept for a while.Later when they woke up,Batgirl saw a pile of dirt.She couldn't sweep it and it's sticky.He called Nightwing but he also can't sweep the sticky dust.Later,the sticky clay seemed to spread all over the cave.