Rani Mukerji is back and how! A sneak peek into "Mardaani" via its trailer, which was launched here Tuesday, shows the actress as a bold, strong and fearless police officer who takes on the child trafficking mafia head on.

The description of the trailer on YouTube reads - "Bold. Strong. Fearless. Watch Rani Mukerji in YRF`s boldest movie ever, `Mardaani`."

And it truly seems to be.

Produced by Rani`s husband Aditya Chopra of Yash Raj Films (YRF) banner, and directed by Pradeep Sarkar, "Mardaani" comes across as a raw and gritty tale in which the actress seems to be displaying women power at its best.

She kicks, slaps, runs, punches - everything a Bollywood `hero` would do. There are no frills to her look - it`s simple, understated and suits her role to a T.

In "Mardaani", she plays Shivani Shivaji Roy, an officer of the Mumbai Crime Branch unit. Her character seems to be no-nonsense.

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Earlier when the film`s poster was launched, YRF had said that Rani`s character Shivani is "deft at picking up hidden clues and fearless in confronting hardened criminals".

"The film`s story takes an interesting curve when a teenage girl is kidnapped by the child trafficking mafia and smuggled outside the city. Shivani then embarks on a relentless hunt for the girl and what follows is a cat and mouse game between the fearless cop and a ruthless mafia kingpin," the statement had said.

The trailer proves that there is a serious social issue that the film tackles in a smart and gripping way. The movie is slated to release Aug 22.