If earth fell upon the milky way galaxys gravity plain while in a planitary alignment what would happen?

I have read that on 2012 we will have a planetary alignment along with passing through the gravitational plane of the black hole of the milky way galaxy. So my question is from the gravitational push and pulls along with the huge effect of the black hole, what will the effect have on earth? Possibility of a lost moon? or a huge climate change?