Sonic was bored. He hated sitting around in the van waiting for Sonia to finish in the hairdressers. He noticed Manic wasn't looking too good either and he was right!

"Sometimes I wonder what she'd do if we went without her." Said Manic sighing.

"Just yell at us for ages and then carry on with her hair." Replied Sonic tapping his foot, "Sis we're waiting!"

Sonia hurried out of the shop with a worried and confused expression on her face.

"Sis! How long does it take?! I think you just broke the record!" Yelled Sonic.

"Bro… Look I'm sorry but I just found out something really weird! I haven't even got round to doing my hair yet." Answered Sonia beginning to panic a bit about something.

Sonic sighed, not realising something bad must have happened and looked over to Manic for help. Manic just lay there snoring happily.

"Oh bro it was horrible! They were talking about mum and… how she apparently got married again to this wolf and now we have another sister who is a hedgewolf. Hedgehog by day and wolf by night. Anyway, it turned out that this wolf that Queen Aleena married was evil and… and… he gave our new sister to Robotnic!" Sonia yelled, spilling out some more words, now talking so fast Sonic couldn't tell what she was saying.

"Sis slow down you're trying to talk faster than me!"

"Sorry… I-I'm just freaked out. Anyway, now Robotnic has her and he's made her into a proper werehog! She's an evil wolf on the full moon!" Sonia continued and looked at Sonic for a reaction.

"Hang on, sis are you feeling ok? Did you have a bad dream or something?" Asked Manic finally waking up from his short nap.

"Guys I'm not kidding! They showed me pictures and she seems to have traits from all of us!" Yelled Sonia.

Sonic and Manic exchanged shocked glances.

"I-I…" Started Manic before his mouth went dry.

"Hang on, if we do have another sister and she's with Buttnik, then we have to help her." Exclaimed Sonic before looking a little confused, "Hang on, how come he didn't just robotisize her like everyone else?"

"Because she doesn't have enough room in her DNA. When you're robotisized, parts of your DNA get replaced but because she is a hedgewolf her wolf DNA has already taken that place so it doesn't work." Explained Sonia.

"I can't believe all this has happened and mum hasn't even said a word." Said Manic, "Do you know what her name is?"

"Yeah, it's Duma. Duma the werehog." Sonia said smiling, "Mum comes up with great names!"

"Duma, nice name." Manic muttered to himself.

After a few questions the Underground finally decided to get some answers.

"Hang on, what's the moon like tonight?" Asked Sonia.

Manic shrugged and Sonic picked up his phone and after a quick call to his friend Cyrus he finally said,

"Almost full…"

The Underground exchanged worried glances and waited for someone to say something.

"I'm not keeping our sister waiting because of a piece of floating rock in the sky." Exclaimed Manic finally. Sonic and Sonia nodded in agreement, not knowing the full effects and powers the moon had on their werehog sister, Duma.

When they eventually got to Robotnik's base they proceeded to sneak around corridors and through various prisons looking for Duma. Suddenly someone tapped them on the shoulder and they all turned round to see Sleet smirking.

"Looking for someone?" He asked picking them up by the scruff of their necks and taking them to Robotnik where strange sounds could be heard. Long eerie waves of sounds that the Underground had never heard before that we know as wolf howls. The Underground listened intently, enjoying this strange music, a complete contrast to Robotnik's reaction. He had his ears blocked with every howl and eventually yelled, "Dooooooh… SHUT DUMA UP!"

Dingo and Sleet ran off and soon the howling was replaced by a growl and Sleet running back to Robotnik in fear.

"Umm… Sir…" Sleet started, a tear of sweat running down his forehead.

Robotnik didn't need telling, he knew what had happened. He sighed in frustration and told Sleet to lock her back up.

"But sir, she's very angry!" Sleet exclaimed in fear.

"And so am I!" Replied Robotnik, "If you're too scared to get her locked up, then bring her to me."

Sleet walked off and the Underground looked at each other worriedly.

"This is it… We're meeting our fourth member for the first time…" Manic whispered.

What they saw next shocked them, they all stared at her and stood back.