credit to Felli@AF
Felli's note: I saw these info on chinese wikipedia, so I might as well translate it. I'm not sure how accurate it is (both my translation & info), so take it as a pinch of salt for now. $this->handle_bbcode_img_match('http://images.asianfanatics.net/forum/style_emoticons/default/smile.gif')
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Michelle & Susanna's character were actually best friends before they fell out with each other. Both of them will scheme and plot against each other, along with Rosanne Lui & Kara Hui's character. Ram Tseung will have a liking for Michelle. Susanna is the old flame of Cheung Kwok Keung's character.
We all know about Tavia & Charmaine's storyline and how Tavia will seek revenge against Michelle, Susanna, Rosanne & Kara, and Charmaine will protect them.
On the concubine's side, Tavia will scheme against other concubines - Selena, Mandy & Tracy. Selena will be Tavia's biggest opponent as she will have the backing of her father (Cheung Kwok Keung) and her mother (Lam Yi Kei) in the palace. Vin Choi is a eunuch and has a liking for Selena (but he said it's for Tavia in interview, so I'm not sure). Tavia will make good use of him to defeat Selena. Yoyo Chen is a palace maid and will become Tavia's personal maid.
Lau Dan is the prime minister while Kwok Fung is one of the advisors in the palace. Kevin Cheng & Kwok Fung are father/son. Mary Hon & Moses Chan are mother/son. If I'm not wrong, Edwin Siu & Tse Shuet Sum are mother/son, both of them will harm Mary & Moses to snatch the Emperor's place (to try and bring Mo down).
And if you're wondering what's Krystal Tin's role is, she is the MOTHER of Charmaine! Yes what the heck! $this->handle_bbcode_img_match('http://images.asianfanatics.net/forum/style_emoticons/default/shocked.gif')