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坚韧倔强的优等生周挽为救重病的奶奶，在求助抛弃她的母亲无果后，有意接近母亲的继子——不羁少年陆西骁，以试图向母亲筹取手术费。毕业后的夏天，周挽和陆西骁在试探中渐生情愫，也一次次地拯救彼此于人生的坎坷逆境。但现实残酷击碎了最美好的青春盛夏，他们在误会中分道扬镳。直到十年后，两人在职场重逢。无法忘记情伤旧痛的陆西骁对周挽频频发难，却发现自己对她的爱从未改变，二人在找寻“工厂事故”真相的路上再次携手，勇敢真挚的心让他们不再分开。
调皮顽劣的陆西骁因摩托车被老师没收，为了拿回爱车，他不得不向优等生周挽看齐，考进年级前一千名。
奶奶的医药费越积越多，周挽一边要应付一名小混混因父亲欠下的债务带来的纠缠逼迫，一边为赚取外快，主动提出给西骁补习功课。
随着二人关系日渐亲近，周挽和陆西骁开始着手，为一群无人待见的金鱼寻找找个更好的家。
郭湘玲找到周挽摊牌，提出只要她和陆西骁断绝往来，就愿意承担她奶奶所有的医药费。
高考当天，周挽的奶奶突然晕倒住院，与此同时陆西骁也收到了关于母亲房产的坏消息。
万发现了父亲人寿保险单背后的真相，而西晓则达成一笔交易，保住母亲的房子。
陆家的家宴上，万央求香菱出手相助，解救自己的祖母；另一边，西晓因怀揣出国学艺术的梦想，与家人爆发了争执。
搬入陆家宅邸后，万悉心照料生病的西晓，还筹办了一场儿童木偶戏，帮他走出创作瓶颈。
万与西晓在游乐园度过无忧无虑的一天，还撮合江帆向顾萌表露了心意。
万四处筹钱，想给祖母凑齐手术费，无奈只得向房东求助；另一边，西晓向洛河发起挑战，要和他来一场篮球对决。
万受伤后，西晓终于知晓她经济窘迫的处境有多艰难，也查清了祖母医药费背后的实情。
After Wan races to find Xixiao before he leaves the country, the pair reunite and join forces for an unexpected rooftop rescue.
Just as Xixiao asks Wan to take their relationship to the next level, a sudden tragedy strikes, threatening their newfound happiness.
After saying goodbye at a crowded funeral hall, Wan returns home in the throes of grief and narrowly avoids a tragic accident.
Xixiao fulfills Wan's wish by winning her a bicycle at an arcade, deeply moving her, while Luo He, feeling betrayed, targets her in retaliation.
Family secrets erupt at Xiangling's wedding as Wan and Xixiao fight to stay together despite growing pressure to keep them apart.
After pulling off a clever escape, Wan and Xixiao flee north to see the snow, but mounting financial troubles threaten their dream of a fresh start.
Wan and Xixiao briefly return to Pingchuan before crafting another escape, while Xixiao's father demands his loyalty over the shareholding dispute.
When Luo He kidnaps Wan, Xixiao rescues her in a violent scuffle, leaving him badly injured. In the hospital, his grandfather forces Wan to leave.
At the hospital, Wan listens to Xixiao talk about his life plans and shocks him by initiating a painful conversation about their relationship.
