In this family, the parents' love always amounts to only two shares: Dad protects the older sister, and Mom dotingly pampers the younger brother. Only Jiahao is treated as a free live-in nanny summoned at will, and even his living expenses are forcibly swiped away to pay for their bills. The whole family goes on separate luxury vacations once again, leaving him behind all alone. But little do they know, this neglected teenager has long clutched his university admission letter, bought a one-way ticket three thousand kilometers away, and completely disappeared without looking back. Returning from their travels, faced with moldy bowls and chopsticks and a phone number that has become an empty number, the family finally panics, weeping as they search for him thousands of miles away. But late remorse is worth nothing, and a home that cannot fit him in—he doesn't want it anymore!