Disclaimer: I do not own Gravity Falls. It was all created from the great and imaginative mind of Alex Hirsch. Also, I really appreciated the imaginative minds of the ones who came up with the unique idea of Reverse Falls which I got inspired to write this story. So, please enjoy! (and don't forget to leave some reviews, I really want to know what you think after reading this chapter. :))

"Is it true that you're coming?"

The sudden beep of her phone made her turn her gaze towards the screen revealing a new message from her friend who invited her to tonight's event.

"Of course! I won't miss it for the whole world."

An old smile curled to her glossed lips as she sent the message. She sighed a relief at the thought that finally, her old self is back. Lately, her friends noticed that she's changed for she never attended a single party during the last three years and she, herself, couldn't understand the reason why. She had opportunities to run away while she's forced to do boring tasks and yet, she didn't dare disobey her parents. This one is the only exception.

Now, she has returned and she lifted a small mirror to check herself before putting on the purple half face mask.

She stared back at two dark blue orbs that looked like the mysterious oceans as she pulled out some strands of her golden hair to the sides of her face to go with her bell shaped bangs and high ponytail. Her earrings were two long triangles of dark colour that fit perfectly to her ravishing dark violet evening gown.

As soon as she finally put the mask on, the limousine skids to a stop and the chauffeur opened the door for her. She stepped outside in black heels and she breathed in the fancy and elegant atmosphere she was in. "I'm finally here."

The ballroom was filled with laughter and music. The moment the two tall doors were opened for her, one of her friends recognized her immediately and lead her to the host of the party. "Pacifica! Is that really you?" The host had magenta hair in a bob cut and her fair skin is in sync with her bodice blue dress. Pacifica noticed that she still love wearing red in accordance with her blue dresses. Two red hoop earrings dangle in her ears, a blood red half face mask is a little too big for her eyes and red heels can be seen under the sequined laces of her dress.

"I'm the one and only, who else would I be?" Pacifica sneered while her friend laughed.

"Tell me, what made you change your mind and come here?" she asked then snapping at a butler to hurry and give her friend a drink.

"I had to get away from doing boring and useless things my parents are making me do," Pacifica sighed as a drink was offered to her then a mischievous glint became visible in her dark blue eyes. "Good thing is, it would take them a long time to notice that their daughter's gone for the rest of the night."

"So you're staying 'til the party's over? Oh, how I love such a rebellious act!"

"Rebellious?" Pacifica paused for a moment then grinned. "Hmm…I like that word. It fits me perfectly."

"As expected from our Pacifica, now this masquerade is not just for Halloween but also to welcome you back."

This made Pacifica smile. It has been years since the last time she had ever felt welcomed. A familiar warm sensation filled her heart and it grew even more when a masked man approached her. An odd feeling came upon her that she knew him from somewhere before, and she stood there staring at his blue eyes as they stared playfully back at her. He smiled as he lifted his gloved hand asking politely for a dance.

She wasn't sure of what was happening but she knew that she's enjoying her dance with a complete stranger. Her eyes were lost in those azure blue orbs again and slowly everything seemed to fade away. Her sight became a blur as they continued to spin until darkness was her only surrounding.

She slowly opened her eyes, groaning from the pain throbbing at the back of her head.

"Where am-I?"

She pants as her eyes blinked, adjusting to the darkness around her. She was forced to sit uncomfortably due to the ropes that tightly tied her to a wooden chair. Dust covered her bare feet as they stayed firm to the floor as if they were glued upon it.

"Wh-What hap-."

Before she could finish, memories start to flood her mind. She remembered laughing and dancing in a masquerade ball her friend invited her to. She was enjoying a magnificent night filled with flashing lights and graceful music until a stranger approached her gently asking her to dance with him. He was smiling at her as they danced and she couldn't help but smile too, even though they just met. It was foolish of her to act like that but still, it made her feel happy to have met some stranger who made her love to dance through the night.

A weak smile curled in her lips only to be returned by a hand striking her hard across the face. She screamed in pain as hysterical laughter echoed in the darkness.

"Who-Who a-re you? Why are y-you do-doing this to m-me?" She said in a shaky voice as the same hand caught her by the chin so that her attacker can gaze at her.

"Hmm…I must say, it's really good to see you in this kind of situation. I'm delighted that it suits you very well," a female voice said. "W-Who are you?" She screamed making her captor let go and laugh even more. "Oh, how silly of you."

The girl peered into the darkness to see her captor taking a candle off a table then lighting it with a ma-. No, it wasn't a match. She gasped as she saw a blue spark flickered from her captor's finger. The light immediately showed a wicked grin.

"Who am I, you ask?" Fear creeped into the girl as her captor's face drew closer revealing a pair of blue eyes and bangs of brown hair pulled neatly at the back of her ear. "Don't you remember, Pacifica?" She said in a sudden familiar voice of the girl she knew from years back. "I'm just the girl who has a fat old lady's name."