When did Phineas rescue Isabella?

i think it is in the episode when phineas and ferb have finished their creation and they decide to call it the beak.Phineas tries to hide the fact that he is the beak (who is the super hero saving people).Isabella is really sad and falls of a building,she is clinging on tho the edge and yelling HELP.phineas gets out of the super hero costume and saves her.I an sure the episodes name is either The Beak or Super hero comes to danville.i hope this helped.