In the heart of the city, Conner Kent, known as Superblimpboy, was preparing for an epic showdown. He gulped down a bottle of Jumbo GNO, feeling his body inflate.

Seeing this, Bruce Wayne, known as Batblimpman, accepted the challenge and drank his own bottle of GNO. His body inflated, growing larger than Superblimpboy.

Their battle ensued, shaking the foundations of the city. Superblimpboy, with his newfound strength, managed to outgrow Batblimpman, leading to the destruction of Wayne Manor.

Meanwhile, Will Harper, known as Red Round Arrow, and Tim Drake, known as Red Round Robin, also drank the GNO, becoming mini giants.

Superblimpman, the inflated mentor of Superblimpboy, also joined the fray. He towered over the others, his size rivaling that of a giant monster.

Batblimpman, now a giant, chased after Superblimpboy. Their clash caused more chaos, leading to the destruction of Gotham City.

They continued to drink the Jumbo GNO, growing taller and wider. Their size difference created a spectacle that the city had never seen before.

The giants reveled in their new forms, laughing and shouting, 'Mine! Mine! Mine!' Their joyous roars echoed across the city.

Their bodies inflated to such an extent that they filled up the entire city, their figures looming over the buildings like colossal statues.

Despite the destruction, the city's inhabitants watched in awe as the giants continued their playful battle, their laughter echoing through the night.

They looked at the city they had unintentionally destroyed, their expressions filled with regret. The giants promised to rebuild Gotham City, vowing to use their powers for good.

And so, Gotham City began its journey towards recovery, under the watchful eyes of its giants, who were now its protectors.