Zeus has a daughter a beautiful daughter who attract some of the gods hades is one of them but Zeus was to ever protective that when hades ask Zuse if he can marry his Daughter he said no.
So hades decided to kidnap Zeus daughter who's name was Persephone when she was picking flowers with her friends so hades with his chariot with black horses road away but it went so fast that their friends couldn't see it but Zeus watched him.
Demeter desperate for help tryin to find her but she couldn't until someone suggested that they should tell Helios the all-seeing sun god and becuase he say that she was pegging he did it and say that Hades took her and that Zeus say him she was mad at Zues that he didn't tell her but Zues thought that it wasn't to bad that Persephone was Hades wife.
when Demeter caught their she wanted to hit him but it was her daughter Demeter wanted to take Persephone away from Hades as possible but Persephone refused then Hades came and she said that she wanted to be with her husband.
She Demeter said that Hades brainwashed her but he didn't so Zeus thought that they should share 6 months with her Demeter didn't like it neither did Hades but they accepted it 6 months with Demeter and 6 months with Hades.
But those 6 months that Persephone spent with Hades Demeter didn't want to deal with harvesting and leaves would fall but when Persephone came with her in the Olympos she shined harvest and made it beautiful so that's why there is summer spring and that's why there is winter.