The story revolves around a man attempting to donate blood, but he faces multiple obstacles and suspicion. Despite having all the necessary certifications and being in good health, the clinic refuses his donation due to minor technicalities, such as having an outdated certificate. The man persists and eventually passes the tests, but his veins are difficult to locate, and the nurse fails to extract blood, leading to further delays.

As the man continues to try, the situation escalates when the clinic staff becomes suspicious of his behavior, leading to the police being called. He is accused of acting suspiciously and tampering with forms, although he maintains his innocence. The situation worsens when evidence, including suspicious cuts on his arm, is used to implicate him in wrongdoing. Despite his protests and claims of being a volunteer, he is taken into custody for further investigation.

The story touches on themes of suspicion, misunderstanding, and the breakdown of trust between individuals and institutions.