Ruby's first trip in the T.A.R.D.I.S. lands her and the Doctor on a Baby Farm space station in the far future, where the children have been left to fend for themselves – and a terrifying bogeyman roams the lower level.
A trip to see the Beatles in 1963 leads the Doctor and Ruby to an unexpected encounter with a powerful being from beyond our universe, who is threatening to destroy all of history by consuming music.
