I'm not sure if that is a genuine question? It is, there is this English story, where every word starts with "s":

Shrewd Simon Short

Shrewd Simon Short sewed shoes. Seventeen summers saw Simon's small, shabby shop still standing, saw Simon's selfsame squeaking sign still swinging swiftly, specifying:
SIMON SHORT
Smithfield's Sole Surviving
SHOEMAKER
Shoes Soled - Sewed Superfinely
Smon's Spouse, Sally Short, sewed sheets, stitched shirts, stuffed sofas.
Simon's stout sturdy sons -- Stephen, Samuel, Saul, Silas -- sold sundries. Stephen sold silks, satins, shawls. Samuel sold saddles, stirrups. Saul sold silver spoons, specialties. Silas sold Sally Short's stuffed sofas.
Simon's second son, Samuel, saw Sophia Sophronia Spriggs somewhere. Sweet, sensible, Smart Sophia Sophronia Spriggs. Sam soon showed strange symptoms. Surprisingly, Sam sighed sorrowfully, sang several serenades slyly, sought Sophia Spriggs' society, seldom stood selling saddles.
Simon stormed, scowled severly, said, "Sam seems so silly singing such senseless songs".
"Softly," said sweet Sally. "Sam's smitten. Sam's spied some sweetheart."
"Smitten!" snarled Simon. "Scatterbrained simpleton! Sentimental, silly schoolboy!"
Sally signed sadly. Summoning Sam, she spoke sympathizingly. "Sam," said she, "Sire seems singularly snappish. So, Sonny, stop strolling streets so soberly, stop singing sly serenades. Sell saddles sensibly, Sam. See Sophia Sophronia Spriggs speedily."
"So soon?" said Sam, startled.
"So soon, surely," said Sally, smilingly, "specially since Sire shows such spirit."
So Sam, somewhat scared, sauntered slowly storeward, shaking stupendously. "Sophia Sophronia Spriggs... Sam Short's spouse... sounds splendid," said Sam softly.
Sam soon spied Sophia starching shirts, singing softly. Seeing Sam, she stopped, saluting Sam smilingly.
Sam stuttered shockingly. "Sp-sp-splendid s-s-summer s-s-season, So-So-Sophia."
"Somewhat sultry," suggested Sophia.
"S-s-sartin," said Sam.
"Still selling saddles, Sam?" said Sophia.
"S-s-sartin," said Sam.
Silence, seventeen seconds.
"Sire shot sixteen snipe Saturday, Sam," said Sophia.
Silence, seventy-seven seconds.
"See sister Sue's sunflowers," said Sophia socially, stopping such stiff silence.
Such sprightly sauciness stimulated Sam strangely. So, swiftly speaking, Sam said, "Sue's sunflowers seem saying, 'Sophia Sophronia Spriggs, Samuel Short stroll serenely, seek some sparkling streams, sing some sweet, soul-stirring strain...'"
Sophia snickered, so Sam stopped. She stood silently several seconds.
Said Sam, "Stop smiling, Sophia. Sam's seeking some sweet spouse!"
She still stood silently.
"Speak, Sophia, speak! Such silence speculates sorrow."
"Seek Sire Spriggs, Sam," said Sophia.
Sam sought Sire Spriggs.
Sire Spriggs said, "Sartin."

Here is on in French, with the letter M:

Maints malheurs me matraquent, mille maux me minent. Michel, mon mari, médit, maugrée, me menace, me maltraite moralement, me ment manifestement !
Mon ménage marche mal. Même Mistigri, mon matou, me malmène : mercredi matin, malgré mes merveilleux merlans marinés, minet mordit méchamment ma main !
Misère ! Mon miroir me montre maintenant ma maussade morosité ; même ma mantille maquille mal mes maux multiples.
Mon médecin minimise mes malaises ; ma marraine Marguerite moque mes maladresses.
Maman, ma mignonne mère, mon meilleur médicament, mutile mon malheur ! Masochiste, moi ?

I think there are such stories in many languages. For example, there is a poem in Ukrainian:

Світанок. Сяйво сонця
Січневе сніжно-світле.
Серпанок снігу сонний
Сріблястий спокій сипле.

Суцільно світлокосі:
Стежки, смоли́сті сосни.
Схилились стоколоси -
Стрічки сухі, серйозні.

Синиці скраю спритно
Стрибають серед світла.
Скарби сховались ситні -
Свята суворість світу.

Стрілою спурхне-скочить
Сполоханий світанком,
Синичий стрій співочий
Співає спозаранку.

Світання славно січня
Сумуючи стрічають.
Сніжинок ситець сніжний,
Святково сонцем сяє.

The richest language

Russian is the richest language in the world. As a proofvement: can you make write a short story in which all of the words beginning with the same letter? In Russian, it is possible.