Bowser's Castle was quite a place to be. Whether it was to be adventuring, or simply racing all over it, the fiery domain of Bowser was definitely a place where you would want to keep your focus, as anything and everything could happen at every turn...

"Give up, you pesky plumbers!" Bowser Junior laughed as he was riding in his Koopa Klown Kar, having Birdo in his possession. "You'll never get back Birdo!"

Mario growled as he shook his right fist at the young Koopaling. "Grr! You let-a her go, you risky rascal!"

"Y-yeah!" Luigi reluctantly added as he moved his hands around. "Birdo's completely innocent! She hasn't got anything that you would want!"

"Oh, but she does!" Bowser Jr. laughed as he rubbed his hands together, glancing at Birdo. "She has more intelligence than any female in the Mushroom Kingdom! That makes her a worthy target for my new experiment!"

Birdo sighed in annoyance as she closed her eyes, folding her arms together, the rest of her body being tied up in rope. "Why did I agree to help out you in your little experiment again...?"

"Because you had pity from my act as a desperate child," Bowser Jr. commented with a smirk as he waggled his right index finger at Birdo. "Turns out I'm more clever than you!"

Mario and Luigi both jumped at Bowser Jr., but Junior easily blasted them with two homing purple Bullet Bills, causing the Mario Brothers to fall in the boiling hot red magma below. Bowser Jr. laughed as he watched Mario and Luigi bounce in the fire in flames, with Birdo rolling her eyes as she knew it was going to be a pretty long night.