Phil is promised a spot for his band in a talent show if he can acquire a boa constrictor for one of his agent's other clients. Marlon gets a job in a grocery store. Sam goes to visit his wife who is in a nursing home with early-onset Alzheimer's.

Baz finally connects with one of his dates, but he learns that Andre is the father of her son. Rajiv is mugged in his mini-cab and is afraid to return to work. Sam asks for Rajiv's help with the company accounts and learns that Dexter embezzled large amounts of money.

Sam makes the arrangements for Dexter's funeral but things don't go as planned. Henry drives a pregnant woman to the hospital and is mistaken for the baby's father.

Dexter sees the insurance salesman Tina had an affair with at his house. He jumps into the Thames, and soon afterwards the insurance salesman's body is found in the boot of one of the mini-cabs.

Cresta Cabs is short of drivers, but Dexter has not returned to work yet. He wrongly suspects Tina of being unfaithful again and gets Cambridge to destroy an expensive painting he bought her, not realizing that Cambridge is in someone else's house.

A new communications system causes problems at Cresta Cabs. Sam and Reen accidentally broadcast a private conversation to all cabs. Sam's partner Dexter returns from abroad after a breakdown caused by his unfaithful wife Tina.

Sam runs Cresta Cabs, a mini-cab company, with the help of his office manager Reen. Baz, a postman working part-time as a driver, copes with a developmentally disabled stepson and tries to find love through a dating agency. Another driver, Phil, is an aspiring rock star who gets into trouble when he discovers that one of his fares is the wife of his idol.