Create me a story for a comic about two superheroes with the following format:

Panel 1: A crowded city street, with tall buildings towering above. The characters, a group of friends, are walking and chatting, with smiles on their faces.
Text 1: "The friends strolled down the busy city street, chatting and laughing, enjoying their day off."

Panel 2: A close-up of one of the friends, looking worried and holding a piece of paper.
Text 2: "One friend frowned, holding a crumpled piece of paper in her hand, worrying about a problem she had."

Panel 3: The group of friends walking into an alleyway, with a "DANGER" sign hanging overhead.
Text 3: "The friends ventured down a dark alley, ignoring the 'DANGER' sign hanging above."

Panel 4: A shot of the group from behind, running away from something.
Text 4: "The friends sprinted down the alley, their hearts pounding with fear as they ran from an unknown danger."

Panel 5: A close-up of one of the friends, looking determined and holding a weapon.
Text 5: "One friend stood tall, armed with a weapon, ready to face whatever lay ahead." Respond with at most 150 words.
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