The Doctor to take his latest companion to the inhabited rings of the planet Akhaten” on this episode of Doctor Who.

The Doctor continues to delve into the mysterious past of Clara and discovers many abnormalities.

Clara runs into Merry, the Queen of Years, who holds all of her people's history in her head who is afraid to sing a song to her god.

Something goes awry with Merry's song and she is soon sucked into the mummy's lair.

Clara gives away her mum's ring for passageway to save Merry.

The Doctor sacrifices his memories to save the worlds.

Clara gives up her mum's leaf to save The Doctor's memories and the worlds.

The Doctor had Clara's mum's ring from all the people she saved. They wanted her to have it.