It was a bright, sunny (but rather chilly) day in Danville, and Phineas Flynn was just getting out of bed when his stepbrother Ferb poked him and jabbed his finger at their calendar. "What's the matter?" Phineas asked, taking a closer look at the date. "Oh. It's Valentine's Day!" Ferb nodded, surveying their room. "Hey, where's Perry?" Phineas and Ferb were sitting slumped against the big tree in their backyard. "What should we do today?" asked Phineas, shivering. "Gee, it's cold." "Well, it is February," said Ferb. Phineas nodded. "Yeah." LATER THAT NIGHT...