Lin is forced to leave his dying daughter and go on a mission for national security. As the team faces a deadly enemy led by Andre, they engage in a fierce gunfight, losing the heart they were supposed to protect. Lin sacrifices himself to save his team but ends up in a life-threatening situation. Thirteen years later, a mysterious hacker named Li-sen targets writer Rick for information. A masked warrior, revealed to be Lin, intervenes to protect Rick and reveals his true identity. As a confrontation ensues, the hacker escapes with valuable information while Lin is hunted down as a prime suspect. Ultimately, the true narrative unfolds as Lin uncovers secrets about a young student named Nancy related to his past. The story culminates in a tense showdown between Lin and the enemy forces, leading to a dramatic escape and a revelation of hidden truths that connect the characters' fates.