Méalla Mikaelson is a hybrid. One of the Two Original Hybrids, in fact. When Méalla's brother Elijah calls her to New Orleans to get their brother Klaus out of a bind, nobody truly knows the extent of what's going on. Méalla certainly didn't expect a pregnant werewolf, or that the baby is Klaus'. As Klaus plots, schemes, and battles to take back what was once their home, Méalla grows to care for Hayley, the werewolf, and tries to learn how to trust her family again. As Klaus puts it, "Witches, dead or alive, are a pain in the ass," and Méalla grows to understand this more than anybody else as impossible things aren't so impossible anymore.
Klaus wants war, and power. Elijah wants peace, and redemption. Rebekah wants love, and freedom. Hayley wants to know her history, and to protect her baby. Méalla doesn't know what she wants, besides that she wants to survive.
After a one night drunken stand; Hayley Marshall finds out she pregnant by one of the original vampires Niklaus Mikaelson. Eventually; after being kidnapped Hayley is brought to New Orleans; were she found the Mikaelson's. Under the circumstances; trouble comes along the way.
Nevertheless, Klaus & Hayley are willing to do anything to protect their unborn child from danger.
I mean what could happen in a town full of Vampires, Werewolves, Witches, and Hybrids?