Kai's Royal Flush
While all that the Bladebreakers can think of are the finals, Kai can’t stop obsessing about King and Queen. With a brand new Beyblade crafted for him by Kenny, Kai longs for a rematch. But Kai isn’t the only one with the royal pair on his mind. Doctor K tracks the duo down and offers them a chance to team up with her so they can capture and wield the power of the four sacred Bit Beasts together. The pair blow her off, interested only in their quests for stealing the perfect Beyblade parts. That is, until they meet up with Kai once more. In a coincidental encounter, Kai gets his wish for revenge. But before he tastes victory, the two disappear! Who knows where they’ll turn up again but chances are good, Dr. K won’t be too far behind...
Aired 04/11/2002EP 43 - Kai's Royal Flush

Beyblade V-Force
The Bladebreakers have to join forces once again because a mysterious group under the lead of Oozuma has defeated them, but the real enemy is not Oozuma. The real threath is formed by a group of people who use cyber-BitBeasts to capture the original ones from the Bladebreakers.
(Source: Anime News Network)