Pi Nai Gum

Komes (Ruj Ronnapop) and M.R. Marut (Kreukkiat Phanphiphat) are close friends who built the Chansukij Hotel business together. However, because of the ambition of Pirawan (Linda Khathanyacharoen), Komes’s secret wife, she manipulates him into betraying M.R. Marut. In the end, Marut goes bankrupt and loses his sanity, killing his own wife and children before taking his own life to preserve his dignity.
The only survivor is M.L. Jongchana (Panomkorn Tangtatsawat), the youngest son, who is saved by M.L. Jitree (Kate Manee Wattanasil). Tragically, she later disappears in a fire set by her own father, who burns everything down. Fannanapha (Chomchai Chatwilai), Komes’s legal wife, is deeply shaken by these events. She divorces Komes and adopts Jongchana, raising him as her own son alongside Kritphet (Chakrit Yamnam), her biological child with Komes.
Meanwhile, Phupha (Phuthanet Hongmanop), a loyal servant, begs to follow her, and his devotion leads her to accept him as another son. Fannanapha and her three children start a new life together and become close with their neighbor Sayan (Ken Chattrangsikun), a widower with two children, Toi (Nopphon Kamthorncharoen) and Nu Yun (Paruji Khemsawat). Over time, the families grow close, and the children bond like siblings.
As they grow up, Phupha becomes a broker at a finance company, Jongchana earns a scholarship to continue his studies, while Kritphet lives aimlessly as a salesman. Though Fannanapha worries about their futures, she believes they will not repeat the rivalry of Komes and Marut.
Meanwhile, Komes falls ill with a brain tumor and discovers that Pirawan and her children—Plerd (Krit Hiranyapruek), Prae (Chulaluck Krittiyarat), and Phruek (Krit Sriphumisret)—are plotting to seize all his power. At this point, Komes begins to think of Kritphet, his true heir, and asks him to help manage the hotel. However, Kritphet refuses, resenting Komes for how he treated his mother.
Soon after, Pirawan and her children successfully take over Komes’s empire and pressure him into committing suicide at the hotel. However, his suspicious death raises doubts for Inspector Seksan (Thongkhao Phattharachokchai), who suspects it may be murder. Among the suspects are Pirawan’s family and Jinda (Kate Manee Wattanasil), Komes’s personal nurse, rumored to have had a close relationship with him.
After Komes’s death, Kritphet meets Jinda and immediately dislikes her, especially when she grows close to Phupha. Meanwhile, Jongchana becomes interested in Komes’s will, which leaves inheritance to both him and Kritphet as a form of atonement.
Because of the will, Kritphet, Jongchana, and Phupha take part in managing the hotel, assisted by Chanyut (Rong Kaomulkadee), a former aide of M.R. Marut. They face constant pressure from Pirawan’s family, who try to drive them out. Kritphet endures it all, determined to prove that Pirawan is behind his father’s death.
Eventually, they fall into Pirawan’s trap. When Phupha exposes her fraud to link her to Komes’s death, he is instead arrested for stealing confidential business data. Jongchana, trying to protect him, is brutally attacked and nearly killed. This leaves Kritphet alone to clear Phupha’s name.
Kritphet teams up with Jinda, and together they successfully expose Pirawan, leading to her and her children losing power. Just when things seem to be improving, Pirawan is murdered before she can stand trial. Her youngest son, Phruek, believes Kritphet is the killer and seeks revenge, injuring Nu Yun in the process.
This incident causes a rift between Jongchana and Kritphet, as Jongchana blames him for everything. Unknown to Jongchana, Kritphet had loved Nu Yun first but chose to step aside for his brother. Deeply hurt, Kritphet becomes even more determined.
Phupha then works with Inspector Seksan to find the real killer, while asking Jinda to take care of Kritphet. Eventually, the truth is revealed: Chanyut is the mastermind behind everything. His goal was to destroy both Komes and Pirawan to restore power to Jongchana, the rightful heir of M.R. Marut.
However, this truth comes at a cost—Inspector Seksan is killed by Chanyut. Afterward, Chanyut takes his own life, ensuring that the full truth behind the conspiracy remains shrouded in mystery.
And what will happen next remains to be seen…