Who's Nocturnal?

After Honey loses a clutch of baby possums she was supposed to be caring for, she and The Gray One set out on a nocturnal adventure to find them. Meanwhile, Shel and Nibbles team up '70s cop show-style to apprehend the nocturnal critter who's been pooping on Shel's shell at night. Diablo gets abducted by an owl with a special talent.