Tidus is journeying with Firion and Cecil as they search for their crystals. Tidus constantly expresses his hate for his father Jecht and his desire to defeat his father. As they journey Cecil expresses concern for his brother Golbez, wondering if he can trust him. Tidus encourages him to go look for Golbez and speak to him, and Cecil agrees, leaving him and Firion alone while he pursues Golbez. Shortly after Firion and Tidus split up to defeat a large mass of manikins, and agree to meet up later. Once the enemies are defeated Tidus is confronted by Jecht. However, before they can fight the Emperor intervenes and dismisses Jecht, providing Tidus an outlet for his hatred. After their battle the Emperor tells Tidus that he will never find his Crystal if he fights for hate, and vanishes with a laugh. Tidus questions the Emperor's words, and why Jecht so readily listened to his commands.
Tidus meets back with Firion, who had fought Jecht after the Emperor dismissed him. Firion tells Tidus that defeating Jecht is his duty, and Tidus tells him what the Emperor said. Firion assures Tidus the Emperor was only trying to manipulate him, and the two continue on. The two come across Jecht and the Emperor arguing, and the two fight. In the aftermath the Emperor vanishes, telling a weakened Jecht he can fight Tidus to his heart's content. Jecht asks Tidus if he wants to fight now, but Tidus refuses, feeling it isn't right to fight his father when he's weak. Jecht berates him and limps away. Tidus tells Firion he is going on his own to follow him, and Firion gives Tidus a Potion, saying Tidus "knows what to do with it."
At Dream's End, Tidus finds Jecht still weakened, and uses the Potion to heal him. Jecht is angered, asking Tidus if he pities him, and Tidus replies that the Jecht he wants to face is the "strongest man in the world" Jecht. Recovered, Jecht quickly knocks Tidus out, but Tidus rises to his feet, refusing to give up. They fight and Tidus wins, Jecht beginning to fade. Tidus begins to cry and tells Jecht he hates him, but trained to become this strong because he wanted his approval. Jecht tells Tidus exactly that moments before he vanishes. Tidus' Crystal appears before him and he takes it, vowing to take care of it.
A Straight Chain at E2 will allow the player to take advantage of the Physical Critical Rate Up Emblem and chain all four enemies. Enemies in Tidus's story use accessories that greatly increase their damage output when they are close to Tidus, but as Tidus is a melee character there is little the player can do about this besides being cautious. Enemies also use the Scarmiglione and Cagnazzo summons frequently, which trigger when the player calls their own summon and either drop their Bravery to 0 or freeze their Bravery. The player is advised to keep in mind which summon the opponent is using before calling their own, or its effect could be wasted.
A Multichain at D3 or a Jump Chain at E3 will chain all enemies, but this is not the way to make the most KP here. The Purple Emblem at D4 grants +1 KP for each battle won, so using a Jump Chain while standing on it will only chain four enemies, but the player's KP winnings will double for a total of 32 KP, compared to 25 KP for chaining the five enemies without the emblem. The boss of the gateway is The Emperor. Firion will be unavailable as an Assist in this battle.
A Cross Chain at E4 will chain all five enemies. This will also enable a Booster x5 emblem. Be particularly wary of the two Strange Battle Pieces - both enter battle with several thousand Bravery and continuously use Grand Lethal, which can be difficult to avoid at close range.
There is no way to chain all five enemies present, but a Multichain at C3 will let the player chain four of them with the Physical Critical Rate Up Emblem. If the player lacks a Multichain, a Jump Chain at C2 or D3 will still chain four enemies, but without the emblem.