Bluto muscles out Popeye to take Olive to the fair. Popeye rushes ahead and poses as a fortune teller, luring Olive in.
He shows Olive her future (actually, her past) in the crystal ball: first, a clip of a mountain climbing sequence that culminates in Bluto assaulting Olive. Then, a clip from another amusement park showing strongman Bluto stealing Olive away to a roller-coaster while Popeye rings a strength-testing bell repeatedly.
Olive, having seen this, no longer wants anything to do with Bluto and walks out.
Bluto exposes Popeye and chases Olive into a Tunnel of Love; Popeye follows and trashes Bluto.