Twilight carefully analyzed the chemicals in the various vials in front of her. She was attempting to create a solution that would help ease the stressful times when the female population went into heat. Those whom weren't ready for a foal of their own could drink it and avoid the whole thing, though it didn't really matter to the fillyfoolers' since they would just do it with their female partner or find another female. She had it nearly completed; all she needed to do was find a mare that was in heat.

Carefully mixing the final chemical into her concoction, she placed it over a small flame to simmer for several minutes. Satisfied she turned away from her work to find Pinkie standing right behind her with a curious look on her face. Twilight screamed and shot five feet into the air "PINKIE! How many times have I told you NOT to do that?" Pinkie giggled "I didn't want to bother you so I waited until you were finished!"

Grumbling, Twilight gave Pinkie a flat look "What did you need Pinkie?" Pinkie's usually bubbly attitude abruptly changed to meek "I was wondering if you saw Dashie around anywhere." "No I don't believe so Pinkie; why do you need to find her?" Twilight's curiosity sparked at Pinkie's rather odd behavior. Pinkie's face seemed to become a darker shade of pink "Well… I'm in heat and I need some help relieving myself. Dashie has been missing all day and I need her REALLY BAD!"

Twilight's face lit up immediately "Don't worry Pinkie! I have something that should help you relieve yourself without Rainbow's help!" Pinkie cocked her head to the side confused "How?" Twilight grabbed her potion with her magic and brought it to Pinkie excitedly, "I have been developing a potion to help ponies avoid their heat; and you can help me test it!" Pinkie sniffed the potion "What if it doesn't work?"

Twilight paused; she never thought of the chance that her potion wouldn't work. It shouldn't be too bad; it is just a potion to relieve females. "I'm sure it won't be too much of a problem Pinkie. Will you help me test it?" Twilight gave Pinkie her best puppy dog face. "Alright Twilight; this will be like an adventure! Except we don't go anywhere." Pinkie bounced excitedly, happy she was helping out her friend. She could just find Rainbow Dash later if it doesn't work.

Twilight practically threw the potion at Pinkie, excited to see if her creation worked. Pinkie grabbed the vial enthusiastically and guzzled the entire contents. Pinkie flushed immediately and began trembling slightly while breathing heavily. "Pinkie? Are you alright?" Twilight backed away slowly as a crazed look seemed to wash over Pinkie's face.

"T-this *gasp* has become *pant* worse." A throbbing fire between her lower legs intensified greatly, it was sheer torture. Gasping, Twilight began sifting through her notes trying to find any mistake she could have possibly made while mixing up her potion. "I'm so sorry Pinkie! I'll fix it, I just need a few minutes to tweak my notes and create a new potion." Pinkie grabbed Twilight by the shoulders viciously "I CAN'T WAIT THAT LONG TWILIGHT! I need to find Dashie, NOW!" Pinkie shot out of the library as fast as she could go.

Still reeling from Pinkie throwing her around like a rag doll; she became worried "I have to go find Rainbow! Who knows what would happen to her with Pinkie in such a state?" She immediately raced out of the library, hoping to find Rainbow before the crazed Pinkie Pie did.

Rainbow was busy doing one of the things she was best at, napping. She had drifted into Applejack's barn and buried herself in the hay that rested in the rafters, hoping to avoid being in the sun. She also was hoping that she could have the day alone; her number one fan had been glued to her side for three days no matter how many times she tried to shake her. She couldn't even spend time with Pinkie.

So far nopony was aware she was even in the barn, and if Pinkie didn't see her rainbow trail on her way here then nopony should find her. She didn't mean to hide from Pinkie, but she hadn't had a day to herself in so long, she really needed this time away. If Pinkie saw her she would have found her by now. She only had her amazing ability to find her after she caught sight of her, encouraging her to sneak into the barn before the sun rose.

Pinkie nearly bowled Applejack over in her desperation "DASHIE? WHERE IS SHE?" Her eyes were wide and dark with lust. Applejack moved back a few paces, wierded out by Pinkie's behavior. "Why I haven't seen her all day, I think she's off napping somewhere." Groaning in frustration Pinkie tore through the orchard, searching for a blue pegasus that could be sleeping on the branches.

Twilight rushed into Rarity's boutique "RARITY! I need your help!" Rarity rushed over in excitement "Oh you're finally letting me give you that makeover! Oh this will be so much fun!" Several different fabrics floated over and started wrapping around Twilight "W-wait! I don't need this kind of help! I need you to help me find Rainbow Dash!" Pausing, Rarity gave Twilight an inquisitive look "Why would you need my help darling?"

Sighing Twilight told Rarity exactly what happened between her and Pinkie. "…so you see we need to find Rainbow right away!" Rarity's jaw dropped in horror "Oh no! This is the WORST! POSSIBLE! THING! We need to find her right away!" Both unicorns rushed out in search of the cyan pegasus.

Pinkie practically tore the barn door down, her search becoming more desperate. She had looked everywhere and couldn't find Rainbow; she had to be in here. She began ruffling through hay bales on the floor with determination in her eyes. Applejack rushed in behind her "N-now Pinkie, nopony has been in this barn all day besides me and Big Mac. Rainbow can't be in here." Applejack sincerely hoped she wasn't in here considering Pinkie's condition; she was very certain she wasn't here since she hadn't seen any sign of Rainbow Dash.

Pinkie was busy turning old piles inside out, ignoring Applejack's words. Several neatly placed hay bales became a scattered mess. Twilight and Rarity, whom happened to be going to Sweet Apple Acers in search of Rainbow, rushed into the barn; concerned from all the commotion that was caused by Pinkie's antics. "Pinkie please calm down! Rainbow can't be in here!" Twilight desperately cried out, immediately halting Pinkie. "WHERE?" Pinkie gripped Twilight by the shoulders, shaking her violently.

Twilight, whom used a tracking spell on Rainbow after Rarity suggested she use it, knew Rainbow was in this barn and it was only a matter of time before Pinkie discovered her. "She's most likely in her cloud home napping. You know how she is, zipping around at one moment and completely immovable the next." Smiling uneasily, she could feel herself shrink back from Pinkie's scrutinizing eyes. "Okie Dokie Lokie!" Pinkie rushed out of the barn, intent on storming Rainbow's house.

Rainbow Dash slept through the entire exchange. Completely unaware of the world around her.