Spoiler warning..

IKEMEN GALORE!! *drools*
Shinonome Mei (Eikura Nana) is a dorky looking girl who wears thick-rimmed glasses, hair clips and most absurdly of all, trackpants under the school skirt with sports shoes. She hails from a small town of Japan, leading a simple life helping her parents at their udon store and fooling around with her classmates.
That is, until the death of her parents in an accident and the introduction of Shibata Rihito (Mizushima Hiro) into her life.

Rihito, the S-ranked butler of the Hongo family and the elder brother of Shibata Kento (Sato Takeru), Mei's childhood friend, arrives at the small town and visited Mei, who was tired out from the grieving, school and the udon store which she mans alone now. He gave Mei the turning point of her life by announcing that her late father was in fact, the only son of the Hongo family and, had ran away with her mum, giving up the Hongo name and inheritance rights. Now, her never-met-before grandfather, Hongo Kintaro, has decided to give her the rights to fight for the huge Hongo estate on terms that she attends the prestigious 100MM Yen per month St Lucia Academy, an all girls' school where every student is accompanied by an extremely good looking butler, and become a lady that Kintaro acknowledges with Rihito as her butler.

Kento, or more affectionately known as Mameshiba by Mei, comes from an outstanding butler lineage, including his elder brother, but has absolutely no interest in becoming a butler, choosing to live on his own in the small town. Although he and Mei are always getting on each other's nerves, Kento does have the feelings for Mei, which he recognises only when Rihito admits Mei into St Lucia. So to be by Mei's side, he clears the demonic 24 hour standing trial easily and gains entrance into the butler school, becoming an apprentice butler under Rika.

Hongo Shiori (Yamada Yu), the adopted daughter of Kintaro after Mei's father left the family and the Lucia, a title conferred to the one with the most excellent flair and results, was the sole benefactor of the Hongo estate but now with the threat of Mei, she tries means and underhanded ways to torture and force her to leave the school, with the help of her devoted butler, Shinobu.

Shinobu
So as Mei tries to fit into the socialites community, she encounters conflicts with a number of her classmates but slowly she garners their friendship and understanding.
The academy is made up of 3 main groups of power, namely:
Sole (Sun)

The Sole girls are 2nd in power of the student community, only bowing their heads to the Lucia. Thus under Shiori's reign, the 4 of them listens to her every word, creating trouble for Mei and her allies.

Izumi & Kiba
Ryuonji Izumi (Iwasa Mayuko), also has the Sole rank but due to her righteous personality, she operates independently from the Sole girls. Only when she was stripped of her inheritance rights due to some string pulling from Shinobu and forced to have a political marriage with a elderly man did she try to force Mei to a challenge. Kiba (Yuki Jutta), is her wide-eyed butler, who is a bit slow-thinking but gives his utmost devotion in serving Izumi.
He is cute!! :p
Lunar (Moon)
Most of the others fit into this Lunar category

The bossy Kayama Rika (Oomasa Aya) & the fencing world champion Aoyama (Mayama Akihiro)

Yakuza lineage Natsume Fujiko (Nakabeppu Aoi) & sensual Nezu (Kyo Nobuo)
I absolutely did not recognise he's the Tokyo Uni Kikuchi of Trick!

The child prodigy Mamahara Miruku (Yoshida Riko) & agent Daimon (Suzuki Ryohei)
Ryohei looks much, MUCH better here than in Majo Saiban.

Drool-worthy Daimon

The spiritual team of Amo Rin (Kutsuna Shiori) & Yotsuya (Maruyama Tomomi)
Umbra (Shadow)
Students of St Lucia academy start out as Umbras and slowly gain Stellas to affix on their bells to obtain rank promotions. Stellas are conferred when the student achieves excellent results in class or does a deed worthy of upholding the reputation of St Lucia. The butlers of the Umbra girls are not allowed to wear their jackets and only those of Lucia are allowed tailcoats. But I wonder y Kento gets to keep his jacket even thou Rika and the whole gang were demoted to Umbra for skipping class en-masse to look for Mei at her small town.

The obnoxious Yamada Tami (Tanimura Mitsuki) & silent Kanda (Abe Shinnosuke), housemates of Mei & Rihito.

The academy is governed by Sister Rose (Horiuchi Keiko), who actually prefers to hide in her secret room reading One Piece mangas & Sakuraba (Suzuki Kosuke).
This is one good show. Ok, good bcos of the ikemens! HAHHAHHAHA. Nahh, the story itself is quite nice too.
I want to know the development when Kento returns as an S-ranked butler!