Plot: Following the death of his wife in a hit-and-run accident, principal ambulanceman Mak Chay-tin lives with his only daughter Lok-yee, sister Oi-fa, and sister-in-law Cheung Ho-kei. The young and naive subordinate Cheuk Ka-kit is impulsive and clashes with Chay-tin's life, while Tam Ka-jun, the training director, pursues perfection and picks on Ka-kit, creating pressure on the team