"Welcome to my alley!" Ozone declared. Gidget and the others peered around the hairless cat to gaze down a dark and slightly creepy alley that lay before them. "You sure you don't live on a spaceship?" Mel asked, tilting his head.

"For the last time, I'm not an alien," Ozone grumbled.

"Right..." Buddy and Chloe muttered at the same time.

Stepping into the alley, Gidget turned to Ozone and asked, "This is where you saw them last?" The hairless cat nodded his head in reply. Facing the alley again, Gidget took a deep breath to reassure herself before walking forward. Mel and Buddy watched in fear while Chloe watched with boredom. Letting a small chirp, Sweetpea froze up on Mel's head. Curious, Norman bounded after Gidget. Tiberius followed the young guinea pig. Ozone padded confidently into his turf.

Sniffing around, Gidget asked, "Did you see where they ran off to?" Ozone shook his head no. Sighing, Gidget turned to the others and declared, "Looks like we have to start picking up some scents."

"Why?" Buddy asked.

"Cuz that's what dogs do best," Gidget replied.

"Other than being super annoying," Chloe grumbled.

Sighing, Buddy put his nose to the ground and began tracking. Mel and Sweetpea followed close behind their friend, anxiously waiting to hear any news. The dachshund was muttering to himself quietly, "Cats... trash... cheeseburger... oil... paint... rain water... humans... Chinese takeout..."

"He's got nothing," Chloe grumbled, huffing.

Just then, Buddy's tail wagged as he declared, "I got something! This way!" The dachshund led them towards a huge chain link fence with a hole in it. Duke's collar was there too. Going through the hole as he continued to follow the scent, Buddy led the group to another alley where an animal control van on fire had crashed into a wall.

"Now where?" Gidget asked. Sniffing the air, Buddy sighed as he murmured, "Nothing. There's too much smoke. All I'm getting is their scent and a rabbit's, along with some other animals. Smells like they were surrounded." Ozone's eyes widened. "What?" Mel asked, glancing at the hairless cat.

"Snowball and the Flushed Pets are some friends of mine who live in the sewers. They despise humans and domestics," Ozone replied. "Can you take us to them?" Gidget asked. The hairless cat shook his head, adding, "I'll look like a traitor if I take you to them. You'll need someone who knows the sewers."

"I know somebody who knows the sewers," Buddy declared.