After an attack on the lab by the SIS, Mike tries to help a girl who may become a Tomorrow Person escape from the KGB.

John, Liz and Mike try to save the Russian girl from both the British SIS and the Russian KGB, with mixed success.

After the Death of Pavla, the Tomorrow People decide to go on Holiday, so Timus sends them to do an archeological dig on the planet Galia. There they run across two excaped slave boys.

With Mike a slave inside the alien's camp, the other Tomorrow People attempt to drive the alien slavers off Galia.

After Mike's band, �The Fresh Hearts� plays at a gig, a man named Jake asks Elizabeth if he could become the band's manager. This offer excites the band, but Elizabeth thinks that Jake is a cheat and a fraud. At a rehearsal Jake asks Mike to play his drums to the special rhythm on a metronome, but the cleaner working in the room starts to act very strangely, and has to be taken outside to recover. Jake says it is their music that affected her, and arranges for music television producer Mike Harding to watch the band play that evening. Harding is impressed, and arranges for them to play live on television. Elizabeth discovers that Jake is actually Professor James Marsden, leader of a religious sect known as the Hearts of Sogguth. She persuades John of infiltrate the group, and he is initiated into them, but thinks they are harmless. Jake gives Mike the Heart of Sogguth drum to play, but warns him not to play the special rhythm. Elizabeth takes John to watch the Mike's band play at the d

Jake tells John to stop Elizabeth telling anyone what happened, and gives him a knife. John jaunts back to the Lab and tries to kill Elizabeth, but his instinct not to kill breaks Jake's control. Mike and Jake go to the Hearts of Sogguth headquarters, but during a strange ceremony a voice warns Jake that Mike is different. Elizabeth finds an old book that predicts that Lord Sogguth will return when a million people hear the beat of his heart, and that he would destroy the Lords of the Heavens. Elizabeth thinks that the television broadcast will reach more than a million and the Lords of Heaven could be the Galactic Trig. The Hearts of Sogguth capture Mike, and something comes out of the sacred drum and takes control of him. When contacted telepathically by John and Elizabeth, Mike lies, saying that he is at home, and that the television programmed is the next day. John and Elizabeth jaunt to the Hearts of Sogguth headquarters to try to destroy the drum, but are discovered by Jake, who