Jessica Alba will topline modern-day fable “An Invisible Sign of My Own.”

Silverwood Films and iDeal Partners Film Fund closed a financing deal for the pic over the weekend at the Toronto Film Festival.

Filmmaker Marilyn Agrelo (“Mad Hot Ballroom”) begins lensing the film, based on Aimee Bender’s tome, next month from a screenplay by Pam Falk and Mike Ellis (“The Wedding Planner”). It is her first feature directorial outing since “Ballroom” (2005).

“Invisible” revolves around a young woman who has retreated from the world and is consumed by numbers and math. Things begin to change when she becomes a second-grade math teacher.

Producers are Jana Edelbaum, Falk, Ellis and Silverwood’s Lynette Howell. Rachel Cohen of iDeal and J2 Pictures’ Jason Felts and Justin Berfield exec produce.

Endeavor’s indie film unit, led by Graham Taylor, will handle domestic rights to the pic. Kimmel Intl. will handle foreign rights. Alba was last in theaters with “The Love Guru” and “The Eye.”