To Sir, with Love S1:E4

Episode 1

At the 5 Dragons' meeting, Ma revealed Zhang's secret to the other leaders which is considered a disgrace. Which made Li worry about her son's future when she learned that he has the same affliction.

Episode 2

Despite of their mothers' rivalry, Tian and Yang grew up to be close step sibling. Tian became the mature and responsible son while Yang stayed free-spirited and carefree.

Episode 3

Li wish for Tian to get close to Lady Pin, but he realized Yang's attraction to her. Tian met Jiu again, which made Yang realized that his brother's gay. Zhang accidentally heard of Tian's secret and intended to blackmail madam Li.

Episode 5

Tian realized his mother's involvement in Zhang's murder. He encouraged Lady Pin to fight for her true love and find another way to pay her family's debt to his mother. Tian grew closer to Jiu's siblings, despite his incessant rejection.

Episode 6

Mr. Ma tried to unveil Zhang's murder by setting up a fake witness. But it backfired because Tian and Yang uncovered his shady business deals. Yang and Bua's investigated Zhang's murder out of their suspicion that madam Li killed Zhang.

Episode 7

The Song family went on a trip to Chonburi to celebrate Tian's engagement. Bua and Yang took this opportunity to find Dr. Qi, hoping to solve Zhang's murder. Mr. Ma ordered Jiu to assassinate Mr. Song's eldest son with Chan's help.

Episode 8

Yang refused to reveal Tian's secret despite his father's pressure. Mr. Ma ordered Jiu to infiltrate Song's manor, which paved a way for Jiu and Tian's romance to bloom even further. Dr. Qi decided to help Mr. Song's investigation

Episode 9

Tian encouraged Yang to pursue Lady Pin's love, despite his engagement to her. Jiu got jealous of Lady Pin. Realizing Tian's feelings for Jiu, madam Li plotted with Jia to trick Tian and Lady Pin into sleeping together.

Episode 10

Tian and Yang successfully helped Lady Pin selling some of her family land to pay her debt. Mr. Song asked Xiao Tong to investigate Jiu's background. Madam Li and Jia proceeded with their plan to make Tian sleep with Lady Pin.

Episode 11

Madam Li's plan backfired because Yang and Jiu came to rescue Tian and Lady Pin. Jiu took Tian away from the manor to live together. Yang thought that Jiu kidnapped Tian for Mr. Ma. He found out his mother's involvement with Mr. Ma.

Episode 12

Mr. Song ordered his men to search for Tian. Dr. Qi made the antidote for Jia's poison and planned to go back to Song's manor. But madam Li intercepted him. Tian tried to contact his home to let his family know that he's safe.

Episode 13

Tian found out that Jiu is Mr. Ma's subordinate. Heartbroken, he went home. Jiu sneaked into Song's manor to bring Tian back. On his way out, Jiu got poisoned by madam Li. Then she tried to kill Yang to keep Tian's secret safe.

Episode 14

Lady Pin saved Jiu and gave him shelter at her house. Madam Li and Mr. Song agreed to marry Tian with Mud. Tian decided to go along with the fake marriage. Madam Li and Jia attacked Mr. Ma to try and kill him.

Episode 15

Mr. Song announced Tian's marriage and succession as the Five Dragons' leader. Chan exposed Tian's secret at the association meeting. Tian planned to take the fall for his mother's murder case. But then Mr. Ma laid siege to Song's manor.

Episode 16

Mr. Ma held Tian and Mr. Song hostage. He demanded the antidote for the poison madam Li used on him. She devised a plan to save her husband and son with the help from Jiu, Yang and Xiao Tong. Mr. Song apologized to Tian for everything.

Episode 17

The rescue mission succeeded, with a steep price. Chan made peace with madam Li, turning over a new leaf. The Song family prepared for Yang and Lady Pin's wedding. Tian decided to leave the manor and live with Jiu and his siblings.