Lok's father's journal leads them to Prague, where the strongest of Titans supposedly resides. It is also the capital of The Organization, meaning the gang is going to need more help... but who will volunteer?

Dante is given the assignment to search for the mysterious Titan Gar-Ghoul, believed to be in Rouen, France, while developing Lok's summoning powers and his use with magical spells.

The mystery of Joan of Arc being a former seeker leads the gang to Notre Dame where a stone gargoyle holds the key to the hidden catacomb's entrance and to more Titans.

Dante, Lok, Sophie, Cherit, and Zhalia must navigate the catacombs and get the cursed ring to a Huntik safe house before 30 minutes pass or The Organization will manage to take control of the ring for evil purposes. While attempting to escape, Lok finds drawings similar to what is in his father's journal.

The Foundation members learn from Tursley that Thor might have been a Seeker and that the hammer itself might be a powerful weapon that The Organization is after. With the help of the number two Foundation member Montahue, they go to Thor's temple -- but the Organization has begun infiltrating the temple of the Guardians of Thor and have a few Titan surprises and challenges waiting.

Members of The Organization have infiltrated the area and begin attacking the Huntik team. What they didn't count on though is Dante and Montahue putting aside their rivalry and actually working together.

Dante is determined to heal an old friend in the Huntik Foundation. His travels send him to Vienna, which also happens to be where Zhalia is hoping to unearth one of the oldest and strongest titans, King Basilisk. Lok's father's journal also contains clues which can only be deciphered in Vienna.

The legend of Jason's ship is believed to hold clues to ancient Titans, so the Huntik Foundation sends Dante and the gang to investigate. DeFoe's rivalry has led him to shame, so he begins sending spies so he can finish Dante off once and for all.

Guggenheim gives the gang another mission: follow the path of Jason the Argonaut and find all of their Titans. On the mission the gang is attacked by mysterious plants which lead them to an island where all their dreams come true, but Zhalia seems highly suspicious and decides to investigate rumors of an ancient magical power found on the same island which she believes are influencing everyone. Meanwhile Grier is up for a promotion, and all he needs to do to receive it is take out DeFoe.

With his new position Grier decides to return to his birthland and stop the war that has been taking place. What Dante and company don't know is that homeland is the exact spot where the Argos has been discovered, leading to a feud between Grier and the Huntik Foundation that won't soon be forgotten.

Lok and the gang visit his home for the summer break, where Lok learns his mom was also a member of the Huntik Foundation. When an old childhood friend appears though with Organization Suits pursuing, the group must put aside their differences to unlock a new Titan and stop the Suits, but is there a traitor in their midst?

The clues the gang found in Prague are finally returned and lead the team to the Tomb of Nefertiti in Egypt, but the Organization decides to make things a little more interesting by cutting off all existence of Sophie Casterwill, including her funds, meaning the gang must find jobs to raise funds and make it to Egypt.

The team take on a mission that Guggenheim makes official: the Tomb of Nefertiti. They retrieve the map, but Zhalia plays them right into the Organization's hands. Will the Organization get the sceptre, which is the key to conquering the world?

The gang goes to Klaus' bookshop, but there are traps. Sophie is paired with Zhalia, and Lok and Cherit are paired with Dante, but Sophie suspects Zhalia of being a traitor.

The gang try to find Vlad the Impaler's Titans so that they can bond with them, but will Zhalia be ordered to blow her cover and to attack the other three?

Dante, Lok, Sophie, and Cherit go back to Paris, France to find the Titan of the legendary Sir Lancelot. While on the mission, Sophie finds out more about the Casterwills, and Lok proves his courage. They lose the Titan, but find something else that might be able to help them find Lok's dad.

The gang go to Turkey to find the legendary Titan Behemoth, but Rassimov is following them. When they are captured by the Amazonians, all hope is lost. Will the Organization get the legendary Titan before them, or will an old friend come back to help them?

Sophie manages to fix Lok's father's journal, and the gang head on to find the sunken city of Atlantis. But on the way they are ambushed by Rassimov and his men. Will Lok be able to find the path to the sunken city?

Lok starts to become stronger and show his true potential. The team finds Atlantis but four tests await them. Will they get the Ancient Amulet of Will before The Organization?

With the Amulet of Will now in their possession, the gang decides to decipher additional clues from Eathon's journal containing the location of the final two Legendary Titans. The next Legendary Titan is located in Ethiopia, Africa, and this time the Professor will personally attend to the issue.

The gang, now joined by Montahue and Tursley, set out to find the second legendary titan in Ethiopia. They have to pass not only the many traps inside the place, but also the Professor and his men. In the end the task of finding the Titan comes upon Sophie and Lok. Can they together unleash the ancient titan? Both Lok and Sophie express their feelings for each other which allows Lok to bond with Legendary Titan Tao.

The gang are at Metz's place where Lok shows him the ancient Amulet of Will, as well as the legendary titan, Tao. It is then when Metz tells him about himself, Eathon Lambert, and another friend, Simon Judeau. Those three had been inseparable and had searched for many titans together. However, during one mission Simon disappeared. The gang believes that Simon might have the last legendary titan. But after some investigation, they make a shocking discovery concerning the Professor.

The gang, after much dissuasion from Metz and Gugenhiem, head to Prague to face the Professor head on at his castle.

After Dante is tricked into giving the Professor their legendary titans and his Caliban amulet, he is left shocked that the Professor deceived him. Lok spearheads the mission himself, Zhalia stays behind to protect Dante from the titans positioned there to stop them, and Lok and Sophie go ahead to thwart the Professor. The Legendary Titan of Immortality is summoned.