The gang travel 300 million years back in time using Lucas's time machine, where Sarah tries to rescue the Australian megafauna from a comet using skills she's learnt from a self-help guide; Rachel finds a special connection with a rugged Mega-Bilb.
La pandilla viaja 300 millones de años atrás en el tiempo. Sarah intentará salvar a los animales de un cometa que está a punto de impactar.
