As the Christmas holiday draws near, Zeus is captured and challenged by Cronus to a chess game. The stakes are high though as Zeus' chess pieces are actually of the seven heroes. The horrible thing is that, if one of the heroes get check mated on the board, they get check mated in real life too! As the heroes race around to find a Cornicopia that grants wishes so they can get Zeus back, Zeus is playing for their lives.

Jay has been feeling the strain of being a leader lately, and he's fighting emotional stress. After flipping out at her when she beats him at chess, Theresa demands to know what's wrong. He tells her about how it's all so hard, and she tells him not to worry, because there are six heroes to watch his back, so he's never alone. She advises him to take a break,and maybe go sailing. But it's her who starts to brood when Odie and Jay make a robot version of Cronus, who can memorize their movements and who's controlled by remote.At least, for a little while. It proves to have a few defaults when he nearly crushes Theresa's hand, so Odie designs some new safeguards. Theresa tells Jay of her worries, but he waves them off, having finally relaxed enough to take her advice and go sailing. But when Odie, Archie, Neil, and Atlanta are heading to the secret wing of the school to install the new safeguards in Cronus 2.0, they realize that their robot has left the training grounds... with Theresa! Now he's using her as bait to pull the heroes into a game, and a deadly one, especially since their only hope to defeat him is to draw out the real Cronus himself...

When Cronus calls upon three dead cyclop relatives to create a weapon of great power that will increase his influence over time, Polyphemus is found wandering around their ancient caves. Yes, that's right, Polyphemus lives, but is blinded and has to wear the Eye of the Storm in his eye socket to help his sight. When Polyphemus discovers Cronus' plan, he sends a message to Odie and the rest of the team but it captured by Cronus soon afterward. Suddenly, it's up to the seven heroes to save their friend and destroy the one weapon that could lead to their defeat.

When Pirithous escapes the underworld to take revenge on Hercules for abandoning him in Hades Chair of Forgetfulness many centuries ago, he plants a tree with poisonous (and attractive)nectar close to the God's secret hideout. The tree attracts the bees that gather honey for the Ambrosia Gods and Goddesses eat. Now, the bees they begin to bring back the tainted honey to the God's garden, and the gods and goddesses are suddenly acting strange; almost like they're at their forgetful 90's. Now it's all up to the seven heroes to stop Pirithous and, now, Hercules!

After Neil pranks Odie, Odie, in a fury, leaves town to gather his thoughts. On a lonely country road, he gets gas at a very antique looking station run by a peculiar old man. This is only part of the mystery. After going on a ways, he ends up in Gizaville, where a party has started. He joins, feeling the bliss of being surrounded by many pretty girls. But then he meets Josephine X, and after flirting, realizes she may not just be a pretty face. Under that heart-stopping exterior is the Sphinx, and she won't let him leave until he solves her riddle. With the help of Valerie, a girl he met at the party, and his friends, who have come to rescue him, Odie eventually is able to figure out the Sphinx's riddle. The town is free, and the heroes have saved the day once again.

With the help of Morpheus,the god of dreams, Theresa creates and sends a vision to Cronus; a valuable part of Jay's plan to lock Cronus away forever. But Cronus learns the truth about vision and unleashes the Oneiroi, black winged demons. The creatures put Theresa in a terrorizing dream. Will she be able to wake up and save her friends when the tables turn on them?

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When Eris comes to town and makes havoc with a magic cell phone ringer, the heroes and the gods themselves are affected. While Odie hurries to find the goddess Harmony, the others must stop Eris herself. But will their own arguments get in the way? If they can't stop her, Eris will have made Cronus' job a whole lot easier!

While walking in an ancient city he once ruled, Cronus happens upon Gaia, a.k.a. Mother Earth (and Cronus's mother!), who sets off a series of Earthquakes in order to convince Zeus to do... what? Meanwhile, Herry defends Granny from the Giant, Antaeus, while the rest of the team dashes off to rescue Zeus.

When Cronus steals the chest of the son of Prometheus, it's up to the team to find the key before Cronus does. After Atlanta falls into a pit, she meets up with Tantalus, and he puts a curse on her. This way Atlanta thinks she can take on Cronus herself with the armour of Athena called the aegis. But will the armour itself take over Atlanta?

Persephone has gone missing, and as a result, the entire world (and underworld) is experiencing a sudden second winter. Atlanta and Neil try to track down Demeter, Persephone's mother, to convince her to warm the earth up again, while the rest of the team goes to the Underworld to try and find Persephone.

After looking into the mask of Phobus, Archie becomes scared of everything. Meanwhile Cronus frees Lykon, a werewolf.

The Tree of Immortality is dying...and all the gods are dying with it! Atlanta (accompanied by a very jealous Archie) tracks down Pan to see if he can help.

Cronus is looking for the Tablet of Prometheus, and the seven heroes search several temples in a race to beat him to it. However, Odie is starting to feel unappreciated, so he uses the Timepiece of Zeus to impress his teammates-but by doing so, he also unintentionally tells Cronus exactly where he is...

When the 7 heroes are on a trip to the Elysian Fields to meet their ancestors and learn more about them, Cronus devises a plan to swipe their memories. Problem for him is that the plan backfires when he and the heroes but Neil lose their memories. Now it's up to Neil to get the poppies to heal his friends before he loses them forever!

Cronus brings the constellation Orion down from the heavens to track down the team, and we learn all about the great hunter's history with Artemis... Meanwhile, Neil is being profiled for a TV show, but the camera girl is determined to find out more than she should about where he and his friends keep going.

After learning about the myth of Perseus, Odie finds the Graes's magical eye at the bottom of a lake, giving the team the ability to find Cronus any time they want. Unfortunately, the Graes want the eye they share back, and are ready to make our heroes experience their worst fears to get it back...

It seems as though our heroes have finally defeated Cronus for good...but have they? After Thanatos, the god of death, kidnaps Archie, the rest of the team starts to think that not all has gone according to plan...