Hades and Hades II

Hades

Zagreus (Darren Korb), the firstborn son of Hades (Logan Cunningham), seeks to escape his father's realm in the Underworld. He is aided in his quest by his adoptive mother Nyx (Jamie Landrum), the Gods of Olympus to whom he has reached out, and other inhabitants of the Underworld. Hades claims that escape is impossible and hinders Zagreus by unleashing the Underworld's monsters on him. Each time Zagreus is slain, he is revived at the House of Hades, a palace where he and other Chthonic gods reside, which he leaves to attempt another escape.
It is eventually revealed that Zagreus wishes to escape the Underworld to find his biological mother Persephone (Laila Berzins) whom he never knew due to being told that he was the child of Nyx. Hades refuses to allow her name to be spoken in his House, and it is said that those who disobey this order will be punished. Nyx decides to help Zagreus find the truth about his birth mother by putting him in contact with his relatives on Mount Olympus, including Zeus (Peter Canavese), Poseidon (Logan Cunningham), Ares (Cyrus Nemati), Aphrodite (Courtney Vineys), Artemis (Jamie Landrum), Athena (Marianne Miller), Demeter (Laila Berzins), Dionysus (Cyrus Nemati), and Hermes (Andrew Marks). After eventually reaching the exit to the Underworld and defeating Hades, Zagreus finds Persephone at a cottage in Greece. After they reunite, Zagreus discovers that since he, like Hades, is bound to the Underworld, he will quickly die after reaching the surface. Despite this, he promises to keep escaping the Underworld to spend time with Persephone and learn the truth about her absence.
Over the course of these visits, it is revealed that Zeus "gave" Persephone to Hades as a reward for ruling over the Underworld with the other Olympians believing that she simply disappeared. The two had a loving marriage until Zagreus was stillborn due to the Fates having decreed that Hades would never have an heir. Persephone ran away in grief, but refused to return to her birthplace on Olympus which she disliked due to the Olympians' constant bickering. Nyx eventually resurrected Zagreus after making a deal with the Fates. Persephone refuses to return to the Underworld because she fears retribution towards Hades if the Olympians discover the truth about her disappearance. Zagreus eventually convinces her to return after reminding her of the bonds of family, and Charon (Logan Cunningham) ferries them to the House of Hades. Persephone resumes her duties as Queen of the Underworld. Now with renewed respect for his son, Hades requests that Zagreus continue his escape attempts to identify further security vulnerabilities in the Underworld.
In an epilogue, Persephone tells Zagreus of her idea of reconciling with the Olympians by inviting them to a feast in the House. At the feast, they claim that Hades and Persephone eloped and had Zagreus, while saying that due to her having eaten Underworld pomegranate seeds, she can only leave the Underworld a few months out of the year. The Olympians accept this explanation, though it is implied they know the truth and wish to move on. With everyone reconciled, Zagreus' duties to escape his home continue.

Hades II

Chronos, the Titan of Time, returns after being overthrown by his children ages ago. He takes over the Underworld and imprisons Hades, Persephone and Zagreus while Hecate escapes with Melinoë, Zagreus' newborn baby sister, to the Crossroads in Erebus. She raises Melinoë and trains her so that she would one day exact revenge on Chronos. After her training is complete, Melinoë descends to Tartarus. Aided by blessings from the Gods of Olympus, Melinoë eventually defeats Chronos. However, Chronos employs his time powers and comes back to life, despite being repeatedly slain by Melinoë.
While looking for a way to defeat Chronos permanently, Melinoë is informed that Mount Olympus is being attacked by Chronos' army under the leadership of the Titan Prometheus, who seeks revenge against the Olympians for imprisoning him, and Typhon, the Father of All Monsters. Melinoë helps the gods defeat them, but only temporarily as they incessantly return to continue their siege. She and Hecate ultimately develop a way to slay Typhon for good and use its power to destroy Chronos permanently with assistance from a past Zagreus, with whom Melinoë manages to communicate through Nyx's Mirror.
After destroying Typhon, Melinoë creates a spell to defeat Chronos. To achieve this, she must kill him in the present while Zagreus does so in the past using Hades' spear. Melinoë defeats Chronos as planned. Instead of killing him in the past, Zagreus reasons with Chronos and makes him repent when he glimpses an alternate timeline where he lived happily with Melinoë and her family. The reformed Chronos releases Hades and the others and they restore the Underworld. Melinoë decides to return with Hecate to the Crossroads and help undo the damage Chronos caused.
After the ending, Chronos helps Melinoë confront different versions of himself and Typhon from alternate timelines to eliminate the possibility of them rising up again. In the epilogue, Melinoë is visited by the Fates, who tell her that they plan to step back from influencing events, allowing the gods to rule themselves in a "golden age" where mortals choose their own destinies.
After visiting The Fates, Melinoë speaks with Hecate and learns that she is, in fact, a version of her from an alternate timeline who successfully killed Chronos. She entered his mind with the intention of destroying him permanently, but was flung back to the beginning of time. She ingratiated herself into the House of Hades to ensure that she could train the younger, alternate version of herself to properly kill Chronos.