Episode 15 - S1.E15

Madam Butterfly is deeply impressed by the Dan's good-natured and

affection. Later when she is bitten by a poisonous snake, Dan even

risks his own life to save her. This greatly touches her and she falls

him for even more. Her love for Den makes her become weaker and weaker

but she still worries about Dan's wound. Knowing that Chi is the

only one who can cure Dan, she escorts Iran to seek help from Chi.

Despite Madam Butterfly's sincere plead, Chi refuses to help Dan.

At that time, Caw is with Chi who promises to help her free herself

from the control of Lo Tso. Chi does this as a revenge on Lo Teo who

has once taken advantage of her sister. In the end, it is Caw who

uses a trick to make Chi promises to cure Dan.