Cameron Frye (Alan Ruck)’s Timeline and Summary

Cameron stays home sick from school.
Ferris calls and badgers him into coming over.
Cameron impersonates Sloane's dad in order to get her out of school, too.
Ferris convinces Cameron to steal his father's priceless Ferrari for the day.
They pick up Sloane and drive into Chicago.
Cameron protests, but lets Ferris leave the car with a shady parking lot attendant.
Cameron and his friends visit Sears Tower, the Chicago Board of Trade, and a fancy restaurant called Chez Quis. Cameron repeatedly wants to go home.
After lunch, Ferris's dad almost busts them.
Cameron and his friends go to a Cubs game and the Art Institute of Chicago.
They have another near-miss with Ferris's father, this time in a taxi.
When Ferris disappears temporarily, Cameron thinks that Ferris went home just to spite him.
After discovering that the parking attendant put 175 miles on the car, Cameron falls into a catatonic state.
When he breaks out of it, he's had an epiphany: He's not going to be afraid of his dad anymore, and this is the best day of his life.
Trying to take the miles off of the car, the kids accidentally crash the car into the woods, totaling it.
Cameron declines Ferris's offer to take the heat for the car because he's ready to stand up to his dad.