Phineas and Ferb accidentally knock an alien space craft while playing baseball.

Phineas and Ferb care for an egg they believe belongs to Perry; the boys create their own video game starring themselves.

Candace tries to find where her brother's wild creations go when they disappear; Chez Platypus becomes the most-trendy restaurant in town.

Phineas and Ferb invent an animal translator; the boys produce a huge concert event to raise awareness for the plastic thing at the end of shoelaces.