"The Invincible Squad" consists of six short stories that evolve around mysterious and unusual cases that require a special team to solve. Heading the special task force is Z whose bright future with the police force was cut short when he dipped into depression after his wife disappeared mysteriously. The task force also consists of Si Feng, a loner with an unhappy childhood and Zi Ling, a psychic who is secretly in love with Z. The six cases covered include Red Heart, The Red Delusion, Evil Shadow, Buried Alive, Abandoned Baby and Alchemy.