As Applejack is given an unexpected gift for Rarity, tragic events ensue.

Don't expect traditional shipping / love and caring relationships here, this is clearly erotically / fetishistically / pornographically oriented. If you don't like explicit sex, don't bother reading it.
There is sex scenes and fetishisms in all chapters, consult the summaries and read them knowingly.

Chapter 1: Applejack is dependable and doesn't like to let down ponies in trouble. Will she get to the bottom of Rarity's disappearance?
There is "moderate" psychological violence and abuse in this one (includes BDSM), you have been warned.
Thematic: abuse

Chapter 2: Twilight Sparkle and Fluttershy visit Rarity to invite her at Pinkie's party... and Rarity faces some of her old demons.
Thematic: gluttony (overeating, stuffing).

Chapter 3: secluded in the Sweet Apple Acres farm, Applejack ignores all Twilight Sparkles attempts to communicate with her. And when Big Macintosh dismisses Twilight once again, he decides to meet his sister in the orchard. Oh, and Gilda and Rainbow Dash have a friendly (and possibly mysterious) chatter.
Thematic: incest.

Chapter 4: Gilda has an unexpected meeting in the Apple family orchard. Meanwhile Fluttershy and Rarity enjoy a moment of relaxation at the spa, though this time Rarity has other considerations in mind than her mane and her skin care. Soon enough the preoccupied unicorn leaves her pegasus friend in Lotus and Aloe's expert hooves.
Thematics: massage parlor, threesome

Chapter 5: after a dinner in a fancy restaurant, Pinkie Pie and Rarity end the evening at the carousel. The pink mare demonstrates her creative use of food in kinky practices... but can she prove enough for Rarity's insatiable appetites?
Thematics: food play, toy... primarily.

Chapter 6: work in progress.

If you find grammatical mistakes feel free to let me a message.