 When the plot was discovered in September 1810, Hidalgo called his parishioners to arms in the village of Dolores, touching off a massive rebellion in the region of the Bajío.In 1810, insurgent conspirators had plotted rebellion against royal government, which was again firmly in the hands of Peninsular Spaniards.When the plot was uncovered, Father Hidalgo summoned his parishioners of Dolores, exhorting them to action.