That whole region of the sky is quite impressive, because along with Andromeda chained to the rock, there is Cetus, the sea-monster, approaching to devour her;

That whole region of the sky is quite impressive, because along with Andromeda chained to the rock, there is Cetus, the sea-monster, approaching to devour her; Perseus, the hero, flying to her rescue; Pegasus, the winged horse upon which Perseus is flying; Cepheus, Andromeda's father; and Cassiopeia, Andromeda's mother, whose actions set the whole story in motion.