Description
Wrth i’r degfed Dr Who fynychu seremoni i enwi seren gyda Wilfred Mott, mae’n dechrau teimlo’n bryderus pan sylweddola fod rhywbeth arall newydd a drwgdybus yr olwg i’w weld yn yr awyr sy’n teithio tua’r Ddaear.When the tenth Dr Who accompanies Wilfred Mott to a ceremony naming a new star, he becomes increasingly suspicious when he realises that something else new and worrying can be viewed in the heavens which is heading for Earth.
