Twinkle Twinkle Lucky Stars is one of Sammo Hung's production featuring the three dragons - Sammo, Jackie, and Biao. It's the 3rd installation of his Lucky Stars series.
Muscles (Jackie Chan) and Ricky (Biao Yuen) are under cover HK cops. They are assigned to protect their colleague Barbara Woo (Sibelle Hu) who is also assigned to protect informant Yi-Ching. Barbara has also solicited the help of her five friends. Together they fend off the assassination attempt of the gangs who are trafficking drugs between Thailand and Hong Kong.
This movie stars almost the same cast as Winners and Sinners, and My Lucky Stars that was also produced by Sammo. The atmosphere of the story is almost identical too. They are so similar that it's hard to tell which movie is which at some point. The story goes nowhere until the last where there's massive amounts of hand to hand combat. This is also same as the Winners and Sinners, and My Lucky Stars. The story is made around the talents of these five stars (Six if you count Sibelle Hu), and isn't particularly fresh approach compared to other HK movies of that time.
This movie has the best cast. It's the earliest movie I've seen Andy Lau in. Other stars includes Yasuaki Kurata, Rosamund Kuan, and Michelle Yeoh to name a few.
Out of the three almost identical movies, this one is the best made, and most recommended for viewing.