There were two women. Demeter and her daughter Persephone.
Hades fell in love with Persephone and asked Zeus for her hand in marriage
Hey dude, can I marry Persephone?
One day Persephone was picking flowers in a meadow when the earth started shaking and the ground opened underneath her and she fell to the underworld where Hades was waiting
Her mother Demeter searched everywhere for Persephone. Finally she asked Apollo if he had seen Persephone, and he told her the Hades had kidnapped her and taken her to the underworld.
Yo, shes in the underworld with Hades
So Demeter made a deal with Hades to return Persephone to Earth, but he tricked her into eating 7 pomegranate seeds, meaning she had to stay in the Underworld for 7 months out of the year.
This is why we have winter, while Persephone is in the underworld the Earth is cold and there is no sun, and the other 5 months are spring and summer. So the sun and heat return to celebrate her returning.