Summer is Here and Phineas and Ferb have big Ideas for The Summer. Meanwhile Alt. Doof tries to Destory Summer in Danvile. Now Perry tells Phineas and Ferb that Doof is Destorying Summer. Now Phineas and Ferb Get all there Robots all Defeat Doof. Meanwhile They meet the Alt Gang again. Meanwhile Old Doof Try to Kill his Brother Roger and Alt. Doof. He Got Doof But Now Roger. Because Roger Called There Mom and Said the She Doesn't like Doof. Then The Mom and Dad says sorry. Also Mom finds out That Phineas and Ferb Build Stuff.