Episode 12 recap: The Moon Observer discovered a conspiracy in the Broken Star Valley.

The aunt informed the commander about the incident of them being attacked by the crown prince. The commander assured them not to worry and promised a way to ruin the crown prince's reputation in five days. The commander was very confident and now felt that the Moon Observer had also become disloyal. Anyone who showed disloyalty could not be allowed to stay. Although the aunt was reluctant, she still found the Moon Observer and explained the commander's plan. The Moon Observer also provided their own explanation. The aunt mentioned that the Moon Observer's family was almost wiped out by the crown prince, but now the Moon Observer seemed to be living a comfortable life. Even if the Moon Observer explained, it would be just empty words. The aunt informed that in five days, the crown prince would arrange a meeting in Willow Lane, and the Moon Observer's task would be to lead the crown prince to another place. It would be enough to just guide him there.

The Moon Observer didn't expect the task to be so simple this time, and the aunt even entrusted it to them. Although the Moon Observer was very unwilling, they agreed to the aunt's plan. The Moon Observer first went to the vicinity of Willow Lane to assess the situation and happened to see a so-called county prince walking by, who was very arrogant. He even wanted to take the Moon Observer inside with him, but the Moon Observer left when they turned their heads.

The Moon Observer understood the aunt's intention. She wanted to expose the secret meeting between the crown prince and the prince of Dongying County, which would be considered treason. At this moment, the crown prince met with the seventh uncle. On the surface, the two of them were happily drinking, but they each had their own secrets. It was at this moment that the Moon Observer arrived. The seventh uncle was still there, envious of their seemingly good relationship. The crown prince left first and saw the Moon Observer holding a bottle of wine. The Moon Observer claimed that they had bought it specifically for the crown prince. When they left, the Moon Observer deliberately spilled the wine on the crown prince's body and used the excuse to help him change clothes. The crown prince knew it was intentional, but still followed along.

The Moon Observer placed clean clothes in the room and waited at the door. When the crown prince arrived tonight, he saw the Moon Observer coming downstairs from the upper floor. The Moon Observer pretended to fall and approached the county prince. The county prince had a lecherous expression, unaware that the Moon Observer would strike at him with a dagger. When the Moon Observer left, the county prince was covered in blood.

The Moon Observer didn't want the crown prince to get hurt, so they were preparing to complete the task. However, when they returned to the room, a masked man suddenly appeared. The Moon Observer recognized him as the Ghost Minister.