The struggle of a family of three as they search for a house to rent after being given an ultimatum to vacate their house by their land lady.

妈妈生了重病，住进了医院，现已生命垂危。此时，阔别已久的爸爸终于现身。他焦急万分，又犹豫不决，最终他别无他法，只能选择把一双儿女都带在自己身边。然而，在妈妈此前为孩子们造梦的基础上，爸爸又将如何实现孩子们对于梦之城堡的幻想呢？