http://www.chabad.org/holidays/JewishNewYear/template_cdo/aid/5347/jewish/Afternoon-Service.htmThe afternoon service consists of the Torah reading, the Amidah prayer, the cantor's repetition of the Amidah, the recital of Avinu Malkenu ("Our Father, Our King").
Torah Reading: The Torah reading speaks of the purity of Jewish life. The Torah warns us not to follow in the immoral ways of Egyptians and native Canaanites, "that the land spew you not out also, when you defile it, as it spewed out the nations that were before you."
The Haftorah: We read the entire Book of Jonah. It contains a timely message on the importance of repentance and prayer. If sinfulness can cause the land to vomit its inhabitants, repentance can cause the fish to deposit Jonah back on dry land and return him to life. One should never despair, prayer and repentance lead from darkness to light, from the shadow of death to a new life.