Psycho movie plot

Marilyn is a working girl in Phoenix, Arizona. She is tired of secretly meeting with Sam Lumus during her lunch break, because almost all the money he earns has to be used to pay for the alimony of his ex-wife, so he can't and Marilyn marry. One day, Marilyn’s boss asked her to bring 40,000 yuan in cash to the local bank to deposit. Because she desperately wanted to change her life, she fled the town on impulse, and she decided to live with her lover Sam in California again. When she drove away from the town, the night was dark and heavy rain began to fall, so she had to drive off the highway. The exhaustion of long-distance driving and the pressure of running away from the money made her almost nervous, so she decided to go Rest at the Bates Hotel by the road for one night. The owner of the motel is Norman Bates. He has a strange temperament, and he loves and fears his mother who is lying in bed. After Marilyn finished the dinner Norman prepared for her, she returned to the room to prepare for a bath. When she entered the bathtub, a strange thing happened.