These DVDs are Region 4.
It can be played by DVD players sold in Australia.
The fourth season of Offspring, an Australian drama television series, premiered on 22 May 2013 on Network TEN. The season concluded after 13 episodes. Offspring is the story of the impossible loves of 30-something obstetrician Nina Proudman (Asher Keddie), and her fabulously messy family, as they navigate the chaos of modern life.
In Season 4 of this series centred on the drama-filled lives of the Proudman family, Nina (Asher Keddie) and Patrick (Matthew Le Nevez) begin preparations for the birth of their first child, and attempt to steer their relationship in the right direction. Meanwhile, Billie (Kat Stewart) lets go of her dream to start a family and decides to concentrate on her career; Jimmy (Richard Davies) and Zara (Jane Harber) bring home a bundle of joy; and Darcy (John Waters) and Cherie (Deborah Mailman) continue to raise their son in their own unique way. Linda Cropper stars as the family matriarch, Geraldine Proudman, and Gary McDonald stars as Dr Peter Noonan, Nina's biological father.