Mai, an international flight CA, dreams of a happy married life with a celebrity man, but the reality is harsh and she is having an affair with her boss, Daiba. One night when she returns home from work, her younger sister Yui, who ran away from the countryside, and her boyfriend Tamotsu visit her and ask if they can stay with her for a while. Tamotsu, who wants to be a musician, says he will take an audition on Yui's advice. Days pass and Yui and the others do not leave. Tamotsu works hard at his part-time job to support Yui, who only plays around. Seeing how sloppy the two are, Mai decides to break up with Daiba. On board, Mai is suddenly hijacked. The other party is Daiba. Mai tries to break up with him, but gets caught up in his pranks. Then the pilot, Jinnan, arrives. Mai is invited to dinner by Jinnan. Mai is excited by the premonition of love, but she carefully advances her love so that Yui, who had previously teased Mai's boyfriend, does not notice...

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