The nuns of Nonnatus House will continue to tell their story for three more seasons of "Call the Midwife," as BBC announced the show's extension.

The announcement of the series renewal for season 6, season 7, and season 8 came while the network featured the press launch for the show's Christmas Special. It was announced by BBC's Director of Content Charlotte Moore.

Neal Street Productions executive producer Pippa Harris acknowledged the support of the network to the period drama series in an interview with OK! "Like a truly supportive parent, the BBC has nurtured our series from conception onwards, and this exceptional three series commission further demonstrates their care and commitment," Harris revealed.

While waiting for the next three seasons of "Call the Midwife," the Christmas Special episode will feature the mission of the Nonnatus House nuns in South Africa as they provide assistance on a small mission hospital located in the Eastern Cape.

On the other hand, the season 6 of "Call the Midwife" will follow the events in 1962. "As they strive to help mothers and families cope with the demands of childbearing, disability, disease and social prejudice, our beloved medics must make choices - and fight battles - of their own. Series six will see them laugh together, cry together, and pull together, supporting each other as never before," the synopsis posted on Radio Times revealed.

The scenes of the sixth season of "Call the Midwife" was shot in several scenic locations, including the streets of East End in London as well as the historic Chatham dockyard. The season is expected to air in 2017.

Actors Jessica Raine, Jenny Agutter, Laura Main, Judy Parfitt, Pam Ferris, Bryony Hannah, Helen George, Stephen McGann, Cliff Parisi, and Emerald Fennell are expected to return to reprise their roles in the series, but Miranda Hart could no longer reprise her role as Chummy after the Christmas special because of other work commitments.