First half (episodes 1-30)
After Tyson became the 2-time world champion, Max, Ray and Kai leave the team so that they have a chance to beat Tyson and become the world champion themselves. This leaves only Tyson and Kenny in the team, but a new character, Daichi Sumeragi, joins them.
The BBA tournament rules are changed to a round robin system, with each team having 2 players per match with up to 2 reserve players. There are six teams at the beginning. Five tournaments are held one after the other in five different countries around the world: the US, Italy, Spain, Egypt and Australia, each consisting of three matches. The matches can either have two rounds with a blader from each team plus a third round with the two winners if a tie occurs, or a single 2-on-2 battle. After these five tournaments are held, the three teams with the most losses are eliminated and the next two teams battle to determine who will battle in the finals against the team with the most wins. The final matches work in the same way.
Second half (episodes 31-52)
Boris (Voiced by: Kent Williams), the secondary villain from the first season, returns and creates the new Beyblade Entertainment Global Association, or BEGA, replacing the BBA. The BBA headquarters are bulldozed and elsewhere, the new BEGA headquarters are revealed. Boris tries to fool Tyson and co. into believing he has made up for his past, as he is apparently trying to help the future of bladers around the world. After a while however, they see what Boris is trying to pull. The Blitzkrieg Boys try their hand at taking down Boris' bladers, but they fail, as one of his strongest bladers, Garland Siebald, damages their blades beyond repair and badly injures their team captain Tala Volkov (Yuriy Ivanov in Japanese version) to the point where he is brought to the hospital. Tyson challenges BEGA's best to a battle, and Boris decides to hold a 5-on-5 tournament in one month's time.
Tyson and Ray decide to have a beybattle on their own, as Ray was the only one who didn't get to face Tyson properly in the World Championship tournament. The battle is intense, but Tyson eventually wins by a narrow margin. However, their blades are trashed and in no condition to be used in the tournament. Even worse, BEGA has now taken control of all the Beyblade shops around, so they can't repair or rebuild their blades. Luckily, the All Starz, F-Dynasty, White Tigers and Barthez Battalion show up and give Kenny a bunch of brand new parts. Kenny makes new beyblades for Tyson, Daichi, Max, Ray, and Kai. However, Kai had decided to join BEGA to once again try to beat Tyson.
At the time of the tournament, Tyson still hasn't decided who should fill in for Kai, and they decide to wait for him, as nobody else is capable of controlling the new Hard Metal System beyblades.
