Leela and Tegan are planning Peri’s surprise 15th birthday party but, when the magician for the party cancels, Ziggy offers to step in. Unfortunately, Ziggy’s left red-faced when all his tricks go wrong.
Meanwhile, Patrick gives Nico a hideous dress for her birthday and tells her to stay away from Dylan. But she disobeys Patrick by going to The Folly to meet Dylan, who gives her a birthday treat and they kiss.
Also, Tom and Peri go for a scan. Later, at Peri’s surprise birthday party, Leela finds the scan photo among the birthday cards. To stop Leela finding out the scan is Peri's, Nico lies that it's her who's pregnant!
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