I really can't find ishuzu ishtar.....I unlocked train and have been looking..

Just play more till you friend rebecca and try to battle in the morning she is only there then

The morning after being invited by Kaiba, you immediately board the train to
The next city.

Event J: Once you arrive, Kaiba explains that the Expert Cup winner will be
crowned the next King of Games.

Duel whomever you find to get KC points to buy packs with.

Event K: Defeat Ishizu Ishtar 3 times to unlock Yami Bakura as an opponent. He
appears randomly when you find Bakura at night. Defeat him to proceed
to the next event.

Event L: The morning after you finish Event K and are at level 12, you receive
an email about the Expert Cup finals and a party at Kaiba's mansion.
If you go to the mansion, you find that it is locked. Keep dueling
until the night of the next day. Roland will take you to Kaiba's
mansion once it turns night.

Event M: Once you arrive at the mansion, Mokuba will interrupt Roland to give
an announcement. He turns out to be controlled by Noah, who is
planning to destroy the world. You will need to find and defeat all
five members of the Big Five in order to save the world. All of the
members have 5 stars. Search the second city to find the first four.
Once you defeat the fourth member, you will be asked to save the game.
You should save the game at this point. Find and defeat the fifth
member to be taken to Noah's military base. You search the base, only
to find that Kaiba lost to Noah (as Mokuba). Defeat Noah (as Mokuba,
and with Mokuba's deck), and then defeat Noah as himself. He uses
very powerful monsters, the strongest of which is Shinato. You will
then be confronted by Gozaburo. The military base is set to
self-destruct after the end of the 20th turn of this duel. You need
to defeat him quickly if you don't want to see "Game Over". Beat him
to find out that all of you were in Noah's virtual world. (starting
at about the point when Noah appeared) Noah realizes that what he
was doing was evil, so he prevents Gozaburo from harming you as you
escape. Once you wake up in Kaiba's mansion, you find Shinato and
it's ritual card in your hand. (nope, it doesn't make sense.)
Pegasus, Para, and Dox are shown questioning what they were doing the
whole time. They were evidently controlled by Noah. You will then
go to the location of the Expert's Cup finals.

--------------------------PART V - EXPERTS' CUP FINALS------------------------
The Experts' Cup Finals take place in a different KaibaCorp tournament
Building. You are allowed to save, purchase cards, and have duels against the
Following opponents: Téa, Serenity, and Mai. Once you are ready to duel, talk
To Roland. You face three opponents this time around, and you will also be
Forced to watch two of the other games. You must face Rebecca, Yami Bakura,
And Yami Yugi in match games. Like I mentioned before, you win a match game
By winning two out of three duels. The first duel is against Rebecca. She
Uses a deck that gains life points for her and costs you life points. She
Also uses Gravity Bind, a very annoying card that will prevent you from
Attacking unless you have a trap removal card. Once you beat Rebecca twice,
You will watch Joey lose to Yami Bakura. The duel is the same for everyone
Who watches it. For some odd reason, this duel counts as a loss against Yami
Bakura. You then go back into the waiting room and are allowed to do the
Previously mentioned actions. Once you are ready, talk to Roland again to
Duel Yami Bakura. His deck uses a lot of fiend monsters, so an Exile of the
Wicked or two might help you win. He also focuses on bringing out Dark
Necrofear. Win the match to watch Yami Yugi beat Seto Kaiba. This game is
Much more even, and it is actually somewhat entertaining. This game counts
As a win against Seto Kaiba. You will then return to the waiting room again.
Your final opponent is Yami Yugi. His deck focuses on Dark Magician and it's
Long list of support cards. Beat him twice to become the next King of Games!
Your prizes include 2000 KCP, the Expert's Cup Prize Pack, and the ability to
Use at most one banned card in your deck. Of course, all of your opponents
Also get that ability. You will then go home for the night. Sleep to begin
Part VI.

---------------------------PART VI - THE RARE HUNTERS-------------------------
This section of the game involves the Rare Hunters from the Battle City part
Of the Yu-Gi-Oh! Anime, and the story is similar. Once this part begins, you
Will begin to be challenged by Rare Hunters at night.

Event N: Find Ishizu Ishtar again, this time in the first city(she should have
about 3 stars). She will ask you if you prefer Unity or Power.
Regardless, you must face Seto Kaiba for an Egyptian God Card. If you
win, you receive a god depending on your choice. Unity gets you
Slifer the Sky Dragon, and Power gets you Obelisk the Tormentor. Yami
Yugi gets the one you don't choose. The Winged Dragon of Ra was
stolen from Ishizu, and she asks you to retrieve it for her.

Event O: After receiving a god card, you will start to be challenged to Shadow
Games at night more often by the Rare Hunters.

Event P: After a few duels with the Rare Hunters, look for a duelist icon with
no stars in the second city to find Namu. He will compliment you but
refuse to duel such a powerful opponent.

Event Q: Duel at night until you are stopped by Rare Hunter. He uses an Exodia
deck. Beat him, and his mind is controlled by Marik. Marik taunts
you, and Yami Yugi arrives soon after to warn you about other Rare
Hunters.

Event R: Look for Joey Wheeler (~4 stars) during the day in the second city.
He is under Marik's control. Win to learn more about Marik's plans.

Event S: Find Yami Yugi (~5 stars) during the day. Tea will appear, but she
is also under Marik's control. She will then leave. Look for her
(~1 star) and win to free her. Yami Yugi arrives to tell everyone
to look for strange people.

Event T: Find Odion (~3 stars) in the second city. He is pretending to be
Marik. He is one of the few Rare Hunters who does not stop you when
you are moving. He uses a lot of trap cards, so Jinzo and/or Royal
Decree are useful here. When you beat him, Namu reveals that he is
Marik, but Yami Marik (his dark side) takes control. Ishizu explains
how he became evil.

Event you: Find Joey Wheeler again in the second city (~4 stars). Marik explains
that he has a stronger hold on Joey's mind and that winning might
harm him.

Event V: Find Yami Yugi (~5 stars) in the second city. You inform him of
Marik's message, and he realizes that a tie would free Joey's mind.
He gives you two cards to help you force a draw: Ring of Destruction
and Self-Destruct button.

Event W: Find Joey once again in the second city. This time he agrees to duel
you, but reminds you that a win would harm Joey's mind/body. Make
sure that you drop BOTH player's life points to 0 at the same time to
force a draw. Winning or losing results in a Game Over. Yami Marik
appears afterwards to laugh at you, Joey, and Yami Yugi.

Event X: This event is available once W is completed. You have as much time as
you need to get more points, cards, and do whatever you want. Once
you feel that you are ready, look for a 5-star duelist at night in
the second city. This is always Yami Marik. Duel him in a Shadow
Game. You must reduce his life points to 0 using your god card to
complete this event. Winning normally gives you experience and
points, but you can't proceed until you strike the final blow to his
life points using your chosen god card. If you win without your god
card, Yami Yugi arrives and explains that you need to defeat Yami
Marik using your god card. After the credits roll, be sure to save
your game when asked if you don't want to lose your progress.