A lesser effort from talented director/action choreographer Tony Ching Siu-tung, this muddled actioner never quite hits its stride, despite some stirring chases and hand-to-hand combat. The "Wonder Seven" (Li Ning, Kent Cheng Chuk-see, Andy Hui Chi-on, Hilary Tsui Ho-ying, Xiong Xinxin, Roger Kwok Chun-on, and Vincent Liu De) are a group of orphans turned motorcycle-riding fighters, who battle evil for the Mainland government. After dealing with some thugs (led by Bobby Yip King-sang) who had perpetrated a "Big Circle" robbery, the team is dispatched to HK to acquire two special cards, which will allow access to a Swiss Bank Account containing millions of dollars in diamonds. They are opposed by Tsun (Chin Ho) and Ying (Michelle Yeoh Chu-kheng), partners who do not see eye-to-eye on how they should conduct their missions. The beautiful Ying and Wonder Seven leader Fei (well-played by Olympic gymnast Li) develop a strong attraction for one another, with Fei even sparing her life at one point. The increasingly deranged Tsun and his men (including a traitorous Mainland officer played by Wong Kam-kong, who used to work with Wonder Seven) soon target the orphans in their attempt to get the cards.

The film was reportedly restructured in post-production to make the plot more coherent but the story still does not play out in a smooth and easily discernible fashion. With the exception of the leads, none of the characters are well-defined and it even becomes difficult at times to tell who is who. However, WONDER SEVEN remains fairly enjoyable, if one just approaches it as a fanciful action and stunt display, forgets about context, and just goes along for the ride. One bit, featuring a runaway elevator exploding through the roof of a skyscraper, is a restaging of a similar sequence in Ching's 1985 film, WITCH FROM NEPAL. Kwan San and Elvis Tsui Kam-kong also appear.