The action starts with three young women arriving at the convent of San Jeronimo in Mexico on the same day.They are shown to a basement storeroom by the nuns where they will stay.The girls explore the storeroom and soon come upon a locked cupboard containing a treasure trove of writings, there are many plays and poems, unfortunately Jesusa is only one of the girls who can read, she reads the plays and poems to the other two girls, Tomasita a (shy Nuhua Indian) and Manuela a (noble woman who is pregnant and sent to the convent by her family). Under the direction of Jesua the girls act out the plays and delight in the poems.
They learn that these are the writings of a famous intellectual nun that died 20 years before in the convent, her writings were banned by the church.
It will all end badly when the Mother Superior finds out what they are doing. In a time when women could not voice their opinions or have the right to be educated. These three young women fight for their rights from the church and society.