Nuveen Performance Plus Municipal Fund, Inc. (the Fund) is a closed-end management investment company. The primary objective of the fund is current income. The fund's secondary investment objective is to enhance portfolio value. The fund invests substantially all of its assets in tax-exempt municipal bonds rated within the four highest grades (Baa/BBB or better). The Fund's investment adviser is Nuveen Asset Management, which is a wholly owned subsidiary of Nuveen Investments, Inc. (Nuveen).