As the main vocal of a band, Jiang Siwang (starring Aaron Kwok) is always the “coolest dad ever” to the eyes of his young daughter Jiang Lu. On the day right after Lu’s ninth birthday, Siwang accidently falls into the water when trying to save a puppy, and disappears from Lu’s life since then. But the magic happens because of love. Siwang mysteriously gains an “extra life” to be with his daughter: he transforms into a dog and returns to Lu, who has become an adult with a very different personality, now going through tons of crises in both her career and marriage. Even as a dog, Siwang will try the best in his way to protect his dearest darling.

现场网的马楠（孙骁潇 饰）和小鱼（吴楚 饰）是一对相恋多年的情侣，马楠不久在郊外购得一处房产，刚好又赶上小鱼的生日。于是他叫来同事兼好友张博（吴超 饰）、吴晓（冯波 饰）、龙梅（王思思 饰），为小鱼策划了一次生日派对，并计划向小鱼求婚。除了曾与小鱼有过露水因缘张博外，整晚的派对都在欢快的气氛下进行。马楠家隔壁住着一对经常吵架的夫妻，异常聒噪的吵闹声引起吴晓等八卦女的好奇，她们结伴来到隔壁一探究竟，却意外发现恐怖血腥的杀人现场。
原本就住户稀少的公寓，此时仿佛变成一座巨大的鬼屋。不断闪烁的灯光，凄厉刺耳的尖叫声以及丧心病狂的杀人者。一种如瘟疫般的病毒在公寓内肆意蔓延……

宅男游戏设计师杭远（杜江 饰），从小就暗恋同校才女李若欣（薛凯琪 饰），可每次要表白的时候她都已进入了新恋情。李若欣最后一段感情被未婚夫背叛，不再相信男人，转而与闺蜜Sammi（李媛 饰）越走越近。杭远顿时万念俱灰，于是富二代“好基友”林森森（陈学冬 饰）提议他做最后一搏，想方设法接近若欣，大胆追求所爱。阴差阳错下，杭远竟成为了网络红人，一时间风光无限。 但是好景不长，若欣很快识破了他们的“计谋”。他该如何挽回和女神的破裂的关系，并成功和她在一起呢？