Since I don't know the exact story, I can only guess. Maybe the first event is Zack leaving or being taken from home. Then, someone realizes he's gone and decides to take action to bring him back. The final event would be Zack actually arriving back home.
In the 'bring zack back home story', perhaps Zack went missing under mysterious circumstances. His family then discovers his absence and contacts the police. The police start an investigation, interviewing people who might have seen Zack last. As the search progresses, there could be some leads that take the searchers to different places. Eventually, they track down Zack's location and are able to bring him back home. All these events, from discovery of his absence to the final reunion, are likely the main events in the story.
If we think about it, the 'bring zack back home story' may start with Zack getting into some sort of trouble that takes him away from home. It could be an accident or a misunderstanding. His friends or family then become worried and begin their search. They might search high and low, asking around in the neighborhood, putting up posters. Along the way, they might encounter false leads or helpful strangers. But ultimately, through their perseverance, they are able to locate Zack and bring him back to the comfort of his home. This whole sequence of events would be the main events in the story.
Chapter 256, "Yuwen Dao's Speculation and the Jade Bone Medicine (Part 2)", is the clearest early answer because the rescue effort creates visible on-page results. The chapter turns that into something concrete by moving from Furthermore, Yuan Cheng told me that on the night the White Dew... to But as soon as Xia Hong spoke, Xia Chuan immediately stopped him..
Chapter 251, "Understanding—Win Hearts First, Then Take the Next Step", is the clearest early answer because it turns Qiu Peng's situation into a concrete plot event. The chapter gives readers a real answer by opening on The distribution of Solidified Fire Oil proceeded in an orderly... and ending on To Chen Yingyuan, these six, along with the thousand Longyou troops,....
Chapter 254, "Alchemy, Special Envoy, Longyou", is the clearest early answer because it turns Hou Quan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Solidified Fire Oil, truly a miraculous substance! to This is personally ordained by our leader, and we ask Xia Hong to....
Chapter 259, "Mission, Helplessness, Ongoing Screening", is the clearest early answer because it turns Holy Tripod's situation into a concrete plot event. Early on, In other words, Liu Peng in front of us is only twelve years old this.... By the end, But upon hearing the command from that captain of the Camp Supply....
Chapter 306, "Rebel Collaborators, Chaos and Opportunism, Long Mountain Changes Hands", is the clearest early answer because it turns Peng Bo's situation into a concrete plot event. The chapter turns that into something concrete by moving from Hu Zi has been captured by Li Tiancheng. to The Cloud Dragon Army should be resting below now, including guarding....
Chapter 254, "Alchemy, Special Envoy, Longyou", is the clearest early answer because it turns Solidified Fire Oil's situation into a concrete plot event. The chapter turns that into something concrete by moving from Solidified Fire Oil, truly a miraculous substance! to This is personally ordained by our leader, and we ask Xia Hong to....
Chapter 302, "Signs of Defeat Emerge, Snow Bamboo's Trump Card", is the clearest early answer because it turns Yuan Cheng's situation into a concrete plot event. The setup is The defenders kept falling, even those at the Cold Resistance Level..., but the pressure keeps building through It's essential to know, due to the suppression from the main....
Chapter 260, "Medicine Workshop Upgrade, Population Surge, and Resource Easing", is the clearest early answer because Medicine Workshop Upgrade finally turns buildup into a real advancement. It opens with The Sun Resistance Pill is not simple either; it can allow the... and closes on Special function 4: Comes with a ten-meter medicine field, which can....
Chapter 261, "Peng and Chen's Shock, the Great Xia Martial Tournament", is the clearest early answer because it turns Lin Kai's situation into a concrete plot event. The chapter turns that into something concrete by moving from Second Year of Great Xia, May 9th The last half hour before dawn. to Speaking of which, Yuwen Dao, the Director of the Hunting Department,....
Chapter 267, "Stunned, the Astonishing Zhao Yuankong (Part 2)", is the clearest early answer because it turns Qiu Peng's situation into a concrete plot event. A useful checkpoint is the way the scene starts with A shoulder was pierced directly, flying over ten meters from the... and follows through with Impressive!" "Being willing to think and able to think already puts....