As soon as the thieves spots Latias in human guise, Annie send out her Espeon while Oakley sends out her Ariados. A String Shot and Psychic attack severely weakens Latias, when Ash pops up out of nowhere and orders his Pikachu to use Thunderbolt on the thieves. He then grabs the girl’s arm (unaware that the girl is Latias) and drags her away. Meanwhile, Espeon and Ariados chases Ash, but manages to lose his sight. The girl flees, then Ash decides to go to the museum where Brock and Misty are. On the floor, they notices two fossils ; a Kabutops and an Aerodactyl. The museum guide then appears and tells a scary legend about the fossils ; long ago, a cruel Trainer used his fossil Pokemon to kill humans and Pokemon alike, until a Latios brought a tidal wave to the city, drowning the fossils and turning the streets into canals, giving birth to Altomare, meaning ‘high tide’ in Italian.
There was also a huge machine in the middle of the museum, and the old man explains than this man-made machine was meant to protect the city in case of disasters. Ash then notices the girl from earlier, but with a beret. He accidentally touches the machine, which makes the old man somewhat nervous, and shouts to not to touch it. Ash apologizes, then gets out quickly. Later, he find the girl without the beret, and she happily beckons him to a wall in which she get past through. Ash tried to go, and ends in a beautiful garden full of Pokemon and water.
The girl is swinging on a swing, while wind chimes starts spinning at high speed. An invisible silhouette gets out of the water and violently tackles Pikachu. Pikachu, ready to attack, gets weary, but when the silhouette attempts to strike for a second time, the girl get in its way, revealing itself to be Latios! Ash is astonished ; Latios really exists. But, why is it mad at Ash and Pikachu? Then, another girl, very similar to the one who protected Ash, appears mad at him. Twins? Mistaking him for a thief, she asks him how he got in the secret garden, and Ash replies he followed the other girl. The beret girl orders Latios to attack, but is interrupted by the museum guide, telling her off because Ash wasn’t lying. The girl then tries to tell her grandfather something, but he tells her to be quiet, then asks Latias if she wanted to play with Ash. The beret-less girl takes Ash to the swing, then transforms into Latias! The old man, named Lorenzo, mentions that Latias might have a crush on Ash, while Latios appears behind Pikachu. Pikachu is still scared, but gets re-assured by a lick, then enjoys playing with Latias and Latios.
The girl introduces herself as Bianca, and apologizes for mistaking Ash for a thief earlier. Latios decides to go underwater, and to show what it sees to Ash, Bianca and Lorenzo. This special ability, called Sight Sharing, allows Latios or Latias to make the other Eon see exactly what it sees. Ash does a nice underwater trip with the sight sharing ability. Then, Bianca tells the legend of Altomare to Ash, who wonders where the Soul Dew is. Lorenzo takes him to a small pool with a blue, round jewel is shining. He explains what the Soul Dew was used in the legend, but also tells, that, if it falls in the wrongs hands, it could drain away the water, along with the island itself! Ash decides to go back to the Pokemon Center to sleep during the night, where Misty and Brock are waiting for him. Latias seemed sad, but Ash promised he would return.