A Summer to Remember.Part 1: The dalmatians rent out a double decker bus and head out into the country, while singing a musical number called "Dogs Are Out for Summer Sun", which ends as a rain storm came out of nowhere, it stops when Dylan sets up his tent. Upon arriving, Dylan falls in love with a Border Collie named Summer and Dolly falls in love with a Doberman named Spike. They also meet a cow named Bessie who, after being insulted by Dylan, proceeds to do everything she can to ruin their day such as sending them all to certain doom with Dante being the only person aware of her misdeeds...
Part 2: Doug and Delilah proceed to use a life raft and jump off the bus so that it can roll back. They end up on a small island off shore and decide to take the opportunity to spend time alone, until another rain storm rolls in. Dolly and Spike find a boat and swim out to them, but a hole causes it to sink trapping them on the island with the parents. Dylan, Summer and Dawkins get up to the lighthouse and use Chips to bring the rope to the small island and then have Dylan ride his tent down to rescue them...