Ryoko's spaceship that crashed in the lake by Tenchi's house has had a baby and Ayeka's sister Sasami has landed. Ryoko acts as though the egg from her spaceship was made by her and Tenchi. Noboyuki, Mihoshi and Sasami are happy but, of course, Ayeka is a little ticked. Ayeka drops the egg and Ryo-Ohki is born. Sasami discovers that she likes carrots.

When Ayeka and Sasami are about to leave, Ayeka and Ryoko get into a fight. Ryoko reveals that Ryo-Ohki is really a spaceship. Once in space, Sasami and Mihoshi get Ayeka to admit that she is on love with Tenchi. Ryoko, in Ryo-Ohki with Tenchi, taunts Ayeka about staying with Tenchi. Ryo-Ohki sees a carrot that Sasami has and crashes into Sasami's ship.

They all end up back on Earth, stranded once again.