The story of Adonis starts as a very peculiar birth. Mirrha, his mother, suffered a dramatic metamorphosis while she was pregnant. Her human body was suddenly transformed into a tree. The child, however, was kept alive in her trunk and was born as a normal child.
Adonis was rescued from the woods by Aphrodite and raised in the Underworld by the goddess Persephone. He grew up and became a very attractive young man and both Aphrodite and Persephone fell in love with him. There were a lot problems related to this dispute, forcing Zeus to intervene. The agreement was to have Adonis spending 1/3 of the year with the goddess of love, 1/3 with the goddess of the underworld and 1/3 by himself, free to do whatever he wanted.