This is another firemen story after the first Burning Flame made a super hit. The storyline is totally different, the characters are totally different.
Alex is a very strict man; he wants everything to be perfect, because he did not want anyone to get hurt. You could say he is a very mean boss, but he is a very talented man, but his marriage was messed up because of him. Alex's wife Yo Yo is a very childish wife, she relies too much on her husband, and she could not take care of herself. That makes Alex feel too stressful, at that time; Alex met Flora, who is a very independent woman. Alex and Flora had a sudden feeling towards each other. Yo Yo could not accept the fact Alex betrayed her, so she divorced Alex and begin to learn to be independent.
Wong He's wife (played by Jessica) was killed by a car accident, and left Ah He a lovely daughter Kei Yiu. Ah He promised himself never try to be a hero, because Ah Yiu can not loss a father. From then on, Ah He did not try to work so hard, until he met Alex (his new boss), and the second woman in his life: Maggie.
Annie is Stephen's master's wife. Stephen's master was passed away, and Annie becomes a widow, she feels very sad because she is still very young. Annie tries to get into a relationship because she needs someone to take care of her. Stephen always there to protect Annie and helps her, then the two begin to love each other. At first, Stephen was afraid about their relationship, because Annie is his master's wife. Later Stephen realized he is very much in love with Annie, so the two decided to marry, but Annie was afraid she will loss another husband, so she would not allow Stephen to be a fireman, therefore they broke apart.