While solving a missing case, Alan and his team encounter a mysterious psychic. The psychic's name is Serra, and she is beautiful and mysterious. Sierra reveals to Allen some clues about the missing person, all of which seem to be related to paranormal phenomena.

Alan was initially skeptical of the clues Sierra provided. However, during the course of their investigation, they found that the clues provided by Sierra were largely accurate. These clues include:

Where the Missing Person Last Appeared: Sierra provides Alan with information about the last location of the Missing Person. After investigating, Allen discovers that this location is the last place where the missing person was witnessed.

Unusual Phenomena Involving Missing Persons: Sierra tells Allen that the Missing Persons had witnessed some bizarre phenomena, such as unexplained auras and sounds, before disappearing. Alan found a similar clue during his investigation, confirming what Serra said.

Possible Target Locations of the Missing: Serra revealed that the Missing may have been drawn to a nearby abandoned building. There, Allen's team found some relics of the missing man, which further strengthened their trust in Serra.

Missing person has been in contact with a mysterious group: Serra said the missing person has been in contact with a mysterious group involved in the paranormal. Allen's investigation revealed that the missing person had indeed attended a meeting of this mysterious group and had made some acquaintances with them.

This led to Allen's interest in Serra, and he decided to learn more about her true identity and how she obtained this information. As the investigation progresses, Alan gradually trusts the clues provided by Sierra and begins to work with her to uncover the truth behind the disappearance.

Sierra explains to Alan and the team that she possesses a special ability to communicate with the spirit world. She describes herself as a "psychic medium" who can communicate with the undead with the help of some mysterious power. Alan begins to be amazed by this paranormal phenomenon, and he thinks inwardly about what exactly this power is and how he can use it to solve the case.

In order to understand Serra's abilities, Alan arranges an in-depth exchange with Serra. They chose a quiet café as a place to mingle. During the exchange, Allen's respect for Sierra gradually increased, and a mutual trust was established between them.

Eren first expressed his curiosity to Sierra about her abilities. Serra smiled and explained that her abilities had been there since she was a child, and that she was able to gain information through communication with the spirit world. She added that she can perceive energies and aura that others can't.

Eren continued to ask questions, asking if Serra could control this ability, or if it was random. Sierra explains that her abilities did appear randomly when she was younger, but as she grew older and learned about them, she gradually learned how to control them.

Ellen then asks if Sierra would be willing to use this ability to help others. Sierra replied that she had always been eager to use her abilities to help others, but she also knew that that ability could put her in trouble. However, she is willing to work with Allen's team to solve some cases involving paranormal phenomena.

Under Serra's guidance, Alan and his team successfully found the missing person. After some investigation, they discover that the missing person turned out to be imprisoned by an evil ghost. The ghost seems to be trying to achieve something by controlling the missing person. Thanks to the efforts of Alan and his team, the ghost is eventually subdued and the missing are saved.

The resolution of this incident gave Alan and his team a deeper understanding of paranormal phenomena. They began to realize that there were indeed things in this world that could not be explained by common sense. And these things can have a significant impact on their detective career.

After the event, Alan invited Sierra to join their team. Serra gladly accepted the invitation and became a member of Allen's Detective Agency. With Serra's addition, the team's strength has been greatly improved, and they have begun to become more comfortable with the investigation and study of paranormal phenomena.