His mother, becoming inconsolable, ended up neglecting her tasks: the land became sterile and there was a shortage of food, and Demeter refused to eat any food and began to languish. No one wanted to tell her what had happened to her daughter, but Demeter, after much searching, finally discovered through Hecate and Helium that the young goddess had been taken to the world of the dead, and together with Hermes, went to pick her up in the kingdom of Hades (or according to other sources, Zeus ordered Hades to return his daughter).
However, as Persephone had eaten something (six pomegranate seeds) it was concluded that she had not entirely rejected Hades. Thus, an agreement was reached, she would spend half the year with her parents, when she would be Cora (for the Romans), the eternal teenager, and the rest with Hades, when she would become the dark Persephone (Prosérpina, for the Romans) . This myth justifies the annual harvest cycle.