It's been Shah Rukh Khan's ardent wish to do at one big FX-driven film that his son can embrace as the desi Spiderman.

Well, now Aryan has reason to rejoice.

Work is on to start India's most spectacular F-X film to be directed by Anubhav (Dus) Sinha.

Though Anubhav refuses to comment on the progress of this epic project it's reliably learnt that the film is to be titled Ra.One. And the title was suggested by Shah Rukh himself.

"In fact Shah Rukh is taking very very keen interest in the scripting of Ra.One. And the director Anubhav Sinha would like Shah Rukh to be credited as a screenwriter for the project, if and when SRK's production house Red Chillies actually sets down to make this ambitious sci-fi thriller, " informs a source.

In the meanwhile reports that Shah Rukh would be starring in another F-X-driven fantasy directed by Santosh Sivan has Sivan puzzled.

"Right now I'm still scripting the fantasy film. And the screenplay is a long way from being completed. So how can I be thinking of casting? And I'm not doing a film with Shah Rukh at all."

As things stand Ra.One will be Shah Rukh's first and only fantasy-driven film.

Though when it would take off would depend on when he completes his current projects Aditya Chopra's Rab Ne Banayi Jodi to be followed by Karan Johar's My Name Is Khan."

Says a source. "In fact these two projects are Shah Rukh's immediate and complete priority right now. He was supposed to start Karan's film earlier this year. But Karan allowed Adi to take his hero's dates and cameraman (Ravi Chandran).

Now Shah Rukh will complete Karan's film. Only then will he think of the FX film with Anubhav. That in any case, requires tremendous preparation."