The gang were excited to be with Lydia and Amy. Just then they saw a man dress in a red and white suite with a brown hat stood there a bit upset. Lydia knew the man and ask "hi, Mr. Browns is everything alright"? Seeing how upset he was. Mr. Browns turn and said looking at Lydia and Amy, "oh hello girls (huffed) no not at all". Mr. Browns was shocked to see Fred and the girls with Lydia and her sister. Lydia explained to Mr. Browns about her friend Daphne and the gang. Then Mr. Browns sigh and said "if you haven't heard there is a creature hanging around here for two days now and been causing a chaos here". Lydia said "you don't mean…" before she could finish Mr. Browns interrupted "The Park Serpent". Fred asked "what the Park Serpent"? Mr. Browns sigh and said "well the Park Serpent is one of the hideous monsters of all time unlike the ones from the Underground this creature has been destroying rides and almost causing someone to get hurt. I definitely don't want that. Anyways the creature is huge and looks like a snake except with arms and a tail as a dragon. It's face looks like a cobra. Everyone is scared of this thing even I'm afraid of it".
Fred asked "so you seen it before"? Mr. Browns nodded "indeed, I seen it yesterday before it almost cause two kids to drown with the water pool. I was told that I might need to shut this carnival down for the people and anyone else safety". Lydia said "you can't shut it down just like that, it's been in town for decades and it's kinda me and my family tradition to come here". Amy nodded and said "yeah, I love this place so much". Mr. Browns sigh and said "I know how much you kids love it here and I love working here and being in charge of this place. But if this creature keeps doing as it doing. I have no choice but to shut it down". Fred said "well Mr. Browns, as Lydia told you about us. We are the mystery gangs and it's our job to solve mystery of things that is causing trouble here". Mr. Browns asked "but how can you kids be able to help"? Daphne said "easy finding clues and solving mysteries". Velma nodded "beside I'm sure there is explanation of what's going on here". Mr. Browns sighed and said "oh I don't know kids". Lydia said "don't worry they do these kind of things all the time. Let them help and maybe you won't need to shut this carnival down". Amy nodded and said "yeah, please". Mr. Browns smiled seeing that Fred and the girls are willing to help. "Alright then I let's you kids tend this mystery". Fred said "we're get the bottom of this mystery".
Meanwhile Papyrus and Sans kept their eyes sockets peer encase if Frisk happen to go by them but as of course no luck. Just then a female voice was heard yelling out their names. Papyrus and Sans turn to see a goat female with fangs, her ears were down floppy, wears a purple dress with a white symbol sign on the dress looking a bit upset. Sans said scratching his skull head worryingly "uh… hey Tori um…" before he finish Toriel stopped and yelled "don't you say hey to me Sans, you two know quite well why I'm here"! Papyrus gave a small nervous laugh while Sans gulp his throat and Sans said "we'll really sorry Tori". Toriel sigh and said "you two are in huge trouble when we find my child and get home". Papyrus and Sans both put their heads down and said "sorry". Toriel said "come on, let's find Frisk and you two are in hot water with me". Toriel led on while Papyrus and Sans both follow Toriel nervously. The brothers both knew that not only Toriel was upset but that they lost Frisk without noticing it.
Near the roller coaster that are for adults only were Shaggy, Scooby, and Frisk. Shaggy scratch his head and said "huh? I wonder where the gang went. Do you know Scoob"? Scooby shook his head "uh… nope". Shaggy stopped which made Scooby and Frisk both stop as well. Shaggy thought a moment and said "well they did say that they wanted to meet Daphne's friend right"? Scooby nodded saying "uh… yup". Shaggy then continue "so if they are with this friend then maybe they may not be too far then we thought they are". Scooby gave a confused look saying "I don't get it". Shaggy said "don't worry old pal, I'll show you what I mean". They were about to go to a different direction when they happen to see people screaming from the right side of them. Shaggy, Scooby, and Frisk happen to turn and saw a strange looking creature coming towards them. The creature is blue looks to be a snake but has a tail as a dragon and it's face was like a cobra, it's eyes were reddish green color. The creature also has two arms but no leg. The creature roar as a lion scaring the heck out of the people nearby. Shaggy, Scooby, and Frisk all scream and ran towards the roller coaster for adults. Shaggy help Frisk and Scooby to get into the roller coaster seat and he hopped in, all three of them hid hoping that the creature wouldn't seen them.
But the creature was tall enough to see Shaggy, Scooby, and Frisk hiding. So the creature walk up and roar as loud as it can, then pick the roller coaster cart up with Shaggy, Scooby, and Frisk inside the cart. All three of them scream as they seen the creature. Soon the creature threw the roller coaster across the carnival. Shaggy, Scooby, and Frisk scream for their lives depended on it. The cart was up in the air so long that finally came down right in front of Fred and the others crashing hard on the ground. Mr. Browns yelled out in shock "not again"! Fred and the girls backed up in shock to see the red cart. Soon Shaggy came out with Scooby then Frisk holding onto Scooby's blue collar. Fred asked still in shock "are you guys alright"? Shaggy shook himself and said "uh huh… I think so". Shaggy look at Scooby and Frisk who both nodded to say that they are alright as well. Velma saw Frisk and asked "who's that kid there"? Shaggy turn and said "oh this is Frisk. We'll helping Frisk to find her uncle". Lydia said "oh you that kid that broke the barrel and bring the monsters here in town". Shaggy and Scooby looked at Frisk in confused and shock. Frisk nodded and sign her hands in saying 'yes, but for a good reason'.
Luckily Lydia and Mr. Browns both knew sign language and knew what Frisk had said to them. Lydia sign back saying 'why are you alone and with these two'? Frisk sign back saying 'I gotten lost and couldn't find my uncles so I met them'. Fred look at Lydia and asked "um… if you don't mind me asking but what were you two doing at the time". Lydia said "oh we were doing sign language". Daphne nodded and asked "so what were you two saying"? Lydia explain to the others on what she and Frisk were sign languishing about. Afterwards Velma look at Frisk and said "well we better find her uncle's soon who knows what that creature has in storage for us".
Arthur Note: I'm so surprise how many people read this story. I did it for the fun since I didn't see a crossover for Scooby Doo or Undertale then I thought would be cool to do a fanfic. Thank you ever so much! There is many more chapters to come. I'm excited to keep going and I'm sure you excited to see what happens next. You'll wait and find out...